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Omron S8M User Manual

Digital multicircuit protector
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  • Page 1 At the end of this document you will find links to products related to this catalog. You can go directly to our shop by clicking HERE. HERE...
  • Page 2 Digital Multicircuit Protector USER'S MANUAL Cat. No. Z241-E1-01...
  • Page 3 S8M Digital Multicircuit Protector User’s Manual Produced June 2006...

  • Page 5: Table Of Contents

    S8M Operations and Operating Modes ........
  • Page 6 TABLE OF CONTENTS SECTION 6 Support Tool ........Installing the Support Tool .
  • Page 7 Section 8 provides information on troubleshooting problems that may occur with the S8M Digital Multi- circuit Protector. The appendices provide a glossary of terms related to the S8M and flowcharts of S8M key operations. !WARNING Failure to read and understand the information provided in this manual may result in per- sonal injury or death, damage to the Product, or Product failure.
  • Page 8 viii...
  • Page 9 WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS...
  • Page 10 Performance data given in this manual is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

  • Page 11: Safety Precautions

    Safety Precautions ■ Precaution Classifications The following conventions are used to indicate and classify precautions in this manual. Always heed the information provided with them. Failure to heed precautions can result in injury to people or damage to property. Indicates a potentially hazardous situation which, if not CAUTION avoided, may result in minor or moderate injury or in property damage.
  • Page 12 Be sure to remove the sheet covering the Product for machining before power-ON so that it does not interfere with heat dissipation. • The S8M takes a DC power input. Do not connect AC power to the power input terminals.
  • Page 13 ■ Derating Curve The temperature range within which the S8M can be used is restricted by the maximum current that normally flows for any one branch output. This restriction is given as a derating curve. Use the S8M within the derating curve. If necessary, use forced cooling.
  • Page 14 • Outputs may be cut off by the abnormal voltage protection with loads that generate reverse peak electro- motive force. • A voltage drop occurs within the S8M. Be sure to consider the effect of the voltage drop on the output voltage.
  • Page 15 Note • The S8M may possibly be damaged from the impulse voltage if a testing device switch is used to abruptly apply or shut off 500 VAC. Increase the applied voltage gradually using the voltage adjustment on the testing device.
  • Page 16 S8M, connect the backup device to the power input side. • When connecting a backup device to the S8M input side, the backup time will be shorter than normal due to internal power consumption. Always confirm the backup time when using a backup device.
  • Page 17 RS-232C port), S8M-CP04-R, and S8M-CP04-RS (UL Class 2 output model). These are collec- tively referred to as the S8M. The functions and specifications described in this manual are shared by all three models, unless differences are mentioned specifically.
  • Page 18 xviii...

  • Page 19: Features And Functions

    S8M Operating Procedure........

  • Page 20: Overview Of Features And Functions

    The S8M is a digital device, so each branch output's tripping current can be Can Be Set in 0.1-A Units set freely between 0.5 and 4.0 A (0.5 to 3.8 A for the S8M-CP04-RS). The abnormal current tripping value and overcurrent alarm value can be set as the circuit protector's rated currents.
  • Page 21 Redundant tripping circuits S8M-CP04-R S8M-CP04-RS S8M-CP04 Note (1) The Support Tool cannot be used with the S8M-CP04, which is not equipped with a communications port. (2) Refer to 2-2 Internal Configuration for internal circuit block diagrams. S8M Digital Multicircuit Protector...
  • Page 22 All S8M models are equipped with a short-circuit protection fuse and thermal fuse to provide protection. External Outputs The S8M has 3 external outputs: the Tripping Alarm Output (TRP), Alarm Out- put (ALM), and Over-temperature Output (TMP). The Tripping Alarm Output is output when an abnormal current or abnormal voltage is detected.
  • Page 23 The default setting is protection level 1. Support Tool S8M Support Tool is available and can be connected to the S8M-CP04-R and Available S8M-CP04-RS. The Support Tool simplifies system startup and maintenance because it allows the user to set the various parameters, monitor operation, save settings data, and copy parameters to other S8M Multicircuit Protectors.
  • Page 24 Overview of Features and Functions Section 1-1 Connecting to a The RS-232C port on the S8M-CP04-R and S8M-CP04-RS can be connected Network to a host computer via CompoWay/F (see note 1). FINS commands (see note 2) can be used to perform operations over the net- work, such as reading settings data, sending operating commands, and switching setting levels.

  • Page 25: S8M Operations And Operating Modes

    Mode Selection Menu and switch to Run Mode. If the power is turned OFF while the S8M is in Test Mode, the S8M will enter Test Mode again the next time that the power is turned ON. In this case, all branch outputs will be OFF (not connected).
  • Page 26 If the S8M has been turned ON already, it will enter Run Mode or Test Mode Procedure the next time that power is turned ON. If the S8M was in Test Mode when the power went OFF, it will start in Test Mode. If it was in a mode other than Test Mode when the power went OFF, it will start in Run Mode.
  • Page 27 If you want to set unused branch outputs to OFF, set those outputs to OFF in Test Mode before switching to Run Mode. • If the power is turned OFF while the S8M is in Test Mode, the S8M will start in Test Mode the next time that the power is turned ON.

  • Page 28: Table Of Basic Functions

    20 ms when it is set to instantaneous detection. (3) The alarm is output within 100 ms when the S8M is set to standard de- tection and within 20 ms when it is set to instantaneous detection.

  • Page 29: S8M Operating Procedure

    Note: When turning ON the power, setting parameters, and testing operation in a new S8M, the parameter Actual operation settings will be saved only when the S8M is switched to Run Mode. Typical Startup Procedure Using the Support Tool Preparation See Section 3 Installation and Wiring.
  • Page 30 To achieve this, extra current capacity is required in the Power Supply Unit con- 39, 79 ation for other nected to the S8M. Select a Power Supply Unit with a current capacity that is 10 to devices connected to 12 A higher than the maximum current supply to the connected devices. Use the...

  • Page 31: Specifications And Functions

    Specifications and Functions This section provides the specifications of the S8M and describes special S8M functions. Component Names and Functions ....... . .

  • Page 32: Component Names And Functions

    Cut off due to an error. Flashing red Cut off Cut off by the redundant protection circuit required for a UL Class 2 output (S8M-CP04-RS only). 4. External Output Terminals and 5. External Tripping Input Terminal Tripping Alarm OFF to indicate when an abnor- + −...
  • Page 33 RS-232C communications. 12. RS-232C Port Terminal Block (RD, SD, and SG) Connect to the communications lines (RS-232C). The terminal block has screwless terminals. The S8M-CP04 (model without communications) does not have these RS-232C terminals. SD RD SG Wire hole...

  • Page 34: Internal Configuration

    S8M's run time. • When an internal circuit has failed, the components can generate exces- sive heat. As a safety precaution against this kind of failure, the S8M is equipped with a function that cuts off operation using a thermal fuse.
  • Page 35 Internal Configuration Section 2-2 S8M-CP04-RS (UL Class 2 Output Model) Cutoff Current-detec- Current-detec- Cutoff circuit tion resistor tion resistor circuit Thermal fuse Fuse Voltage Display Temperature DC branch output 1 Switches detection circuit detection −V Current-lim- DC input iting circuit...

  • Page 36: Specifications

    Specifications Section 2-3 Specifications Ratings and Characteristics Item Model S8M-CP04 S8M-CP04-R S8M-CP04-RS Number of branches I/O char- Rated input voltage 24 VDC (19.2 to 26.4 VDC) acteristics Allowable input current 17.0 A max. 16.0 A max. Maximum shutoff output current (per 4.0 A...
  • Page 37 Weight 400 g max. External Output and The S8M has 3 external outputs, the Tripping Alarm Output (TRP), Alarm Out- External Tripping put (ALM), and Over-temperature Output (TMP), as well as an External Trip- ping Input (TRG). Each of these I/O circuits is independent.
  • Page 38 − pole Note When a branch output is cut off with the External Tripping Input, it cuts off power to the branch output even faster than turning OFF the S8M's power supply. Example Operation of the This example shows the ALM output operation when an undervoltage alarm Alarm Output (ALM) occurs.
  • Page 39 Specifications Section 2-3 Example Operation of the This example shows the TRP output operation when an overcurrent alarm or Tripping Alarm Output abnormal current tripping occurs. (TRP) Tripping (cutoff) current value Power supply voltage Overcurrent alarm value Branch output current Branch output voltage Alarm Output (ALM) (not conducting)

  • Page 40: Basic Function Details

    A different current tripping value can be set for each branch output. Set the Tripping current tripping values between 0.5 and 4.0 A (in 0.1 A units) with the S8M- CP04 and S8M-CP04-R, or between 0.5 and 3.8 A (in 0.1 A units) with the S8M-CP04-RS.
  • Page 41 (See note.) Current (A) Note The S8M contains a current-restricting circuit that prevents a current above a specific value from flowing. The current is thus restricted during the time required to cut off the output. ■ S8M-CP04-RS (UL Class 2 Output Model)
  • Page 42 (See note.) Current (A) Note The S8M contains a current-restricting circuit that prevents a current above a specific value from flowing. The current is thus restricted during the time required to cut off the output. Startup Delay Normally, a large inrush current may run through the system when equipment starts.
  • Page 43 Each branch output's current tripping value can be set between 0.5 and 4.0 A Function (0.5 to 3.8 A in the S8M-CP04-RS) in 0.1 A units. In addition, the overcurrent alarm type can be set to standard detection or instantaneous detection.

  • Page 44: Overvoltage/Undervoltage Protection Function

    If the fuse blows, that circuit cannot be used. Safety When Cycling If the S8M is turned OFF in Test Mode, all branch outputs will be disconnected Power from Test Mode when the power is turned ON again. This is because the connection/discon- nection settings have not been completed, so all outputs are disconnected to ensure safety.
  • Page 45 Basic Function Details Section 2-4 Overvoltage Alarm An overvoltage alarm value can be set between 20.0 and 28.8 V. Setting Default Operation Seven- Outputs Conditions range value segment required to display reset 20.0 to 28.8 V When the voltage is Alternately The Alarm Voltage below...

  • Page 46: Over-Temperature Output

    Basic Function Details Section 2-4 Power supply voltage (V-U) +0.3 V V-U: Undervoltage alarm value 500 ms 100 ms Error display and Reset possible Alarm Output (ALM) Undervoltage alarm value Power supply voltage Branch output current Branch output voltage Alarm Output (ALM) Reset signal 3 s min.
  • Page 47 (For details, refer to page 41.) Fan, etc. 24 VDC Relationship between The internal temperature of the S8M is displayed. This is not necessarily the Control Panel same as the ambient temperature of the S8M or the temperature inside the Temperature and S8M’s control panel.

  • Page 48: Startup Sequence Function

    S8M. It does not provide time synchronization between outputs on more than one S8M. After the power supply is turned ON and the self-diagnostics are performed, the S8M will start connecting the branch output according to their preset star- tup sequence times. Power supply...

  • Page 49: Shutdown Sequence Function

    • Startup sequence executed from the Support Tool Shutdown Sequence Function When the S8M's input power supply is turned OFF, all of the branch outputs are turned OFF (disconnected) simultaneously. On the other hand, when the branch outputs are cut off by the external tripping input or communications, a time delay (see note 1) can be applied between the branch output disconnec- tions.
  • Page 50 Shutdown Sequence Function Section 2-6 Note (a) When operation is cut off due to an abnormal voltage (above 28.8 V), all of the branch outputs will be cut off simultaneously. (b) The shutdown sequence function will operate on a branch output only if the external tripping input is enabled for that branch output.

  • Page 51: Installation And Wiring

    Wiring ............RS-232C Port Wiring (S8M-CP04-R and S8M-CP04-RS Only) ..

  • Page 52: Installation Environment

    Cabinets or Control suitable ambient conditions as well as access for operation and maintenance. Panels The operating temperature range for the S8M is − 10 ° C to 60 ° C. Observe the Ambient Temperature following precautions. • Provide enough space for good air flow.

  • Page 53: Installation

    20 mm min. Wiring duct Installation When mounting the S8M in a panel, use DIN Rail. Surface installation cannot be used. Mounting in a Panel • The S8M must be installed in the orientation shown below to ensure ade- quate cooling.
  • Page 54 Installation Section 3-2 • Do not install the S8M in any of the following orientations. Incorrect Incorrect Incorrect Incorrect External Dimensions 86.5 4.35...
  • Page 55 N·m (10.8 in·lb). Attachment to the DIN The S8M attaches to the DIN Rail with one snap. Hang the S8M on the top of Rail the DIN Rail with the installation notch on the back of the S8M, pivot the S8M downward, and press until the S8M locks securely on the Rail.
  • Page 56 Recommended End Plate PFP-M M4 × 8 Pan-head screw 35.5 35.3 11.5 M4 spring washer Removal When removing the S8M from the DIN Rail, pull the lock lever down with a flat- blade screwdriver and pivot the S8M upward to remove it.

  • Page 57: Wiring

    Section 3-3 Wiring Wiring Precautions • When wiring, cover the top of the S8M to prevent wire strands from enter- ing. After completing the wiring, be sure to remove the cover to avoid overheating. • The power input terminals have M4 screws. Use the following crimp termi- nals on the power input wires and tighten the terminal screws to a torque of 1.08 N·m (9.6 in·lb).
  • Page 58 Wiring Section 3-3 Maximum Recommended Current: The values listed in the table above are for bundles of up to 4 wires. If 5 or more wires are bundled together, reduce the max. current to 80% of the listed current. The following chart shows only the relationship between the voltage drop per meter and the current and wire length.
  • Page 59 Wiring Section 3-3 24 VDC Power Supply +10%/−20% + Terminal − Terminal Wiring the External The TRP, ALM, and TMP outputs operate as normally closed outputs, which Outputs and External are OFF when the power is OFF, ON during normal operation, and OFF when an error has occurred.
  • Page 60 Turned OFF when the input voltage, current, or run time exceeded the corresponding set ALM (−) value. TMP (+) Over-temperature Turned OFF when the S8M's internal temper- Output ature exceeded the over-temperature output TMP (−) value. TRG (+) External Tripping...

  • Page 61: Rs-232C Port Wiring (S8M-Cp04-R And S8M-Cp04-Rs Only)

    The S8M-CP04-R and S8M-CP04-RS have RS-232C port terminals for com- munications with the Support Tool. SD RD SG Creating the There is not an accessory connecting cable available to connect the S8M with Connecting Cable personal computer. Assemble an RS-232C connecting cable as shown below. Host computer connection...
  • Page 62 RS-232C Port Wiring (S8M-CP04-R and S8M-CP04-RS Only) Section 3-4 Wiring the RS-232C Port Terminals • Strip 10 mm from the ends of the RS- 232C cable's wires. • Press the terminal's release button all the way in and insert the wire into the round wire hole.
  • Page 63 SW1-8 : OFF SW1-9 : OFF SW1-0 : OFF Note When connecting and communicating with multiple S8Ms in this way, a unique unit number must be set on each S8M. (For details on setting the unit number, refer to pages...
  • Page 64 RS-232C Port Wiring (S8M-CP04-R and S8M-CP04-RS Only) Section 3-4...

  • Page 65: Parameter Settings

    Parameter Settings This section explains how to set S8M parameters. Parameter Table..........

  • Page 66: Parameter Table

    S8M for use in the system. When setting the parameters with the S8M's keys, switch the operating mode to Setting Mode.

  • Page 67: Parameter Setting Ranges

    Clear run time None Note (1) In the S8M-CP04-RS, the setting range is 0.5 to 3.8 A and the default val- ue is 3.8 A. (2) If the run time value is set to 0.0 kh, no alarm will be output.
  • Page 68 Test Mode, it will start in Run Mode the next time that the power is turned ON. If the S8M was turned OFF in Test Mode, it will start in Test Mode the next time that the power is turned ON.
  • Page 69 A newly purchased S8M will start in Setting Mode when it is turned ON for the Mode Selection Menu first time. If the power is turned OFF with the S8M in Test Mode, it will start in Test Mode the next time it is turned ON. Otherwise, once the S8M has been switched to RUN Mode, it will start in Run Mode when power is turned ON.
  • Page 70 Switching between Displays in the Mode Selection Menu When the S8M is switched to the Mode Selection Menu from Run Mode, the display will show “RUN.” At this point, the S8M r u n will automatically enter Run Mode if the Mode Key (...
  • Page 71 Switching the Operating Mode Section 4-3 Note The procedure for initializing parameters is as follows: Press the Mode Key ( ) from the ini- tialize display (INI). The S8M will i n i switch to the parameter initialization display. °C 2 3 4 NO will be displayed.

  • Page 72: Changing The Protection Level

    S8M will return to Setting Mode. °C 2 3 4 Note If the S8M has been turned ON for the first time, it will return to Set- ting Mode. If the S8M has been in Run Mode before, it will return to Run Mode.

  • Page 73: Switching To Setting Mode

    Branch output number 1 is lit. The initial Setting Mode display is the current tripping value for branch output 1 (C-V). Once the S8M is switched to Setting Mode, it will not return to Run Mode automatically. (To return to Run Mode, press the Keys simultaneously for 3 seconds again.)

  • Page 74: Individual Branch Output Settings

    The set value can be changed by pressing the Keys (see note). The setting range is 0.5 to 4.0 A (0.1 A units) for the S8M-CP04/CP04-R and 0.5 to 3.8 A (0.1 A units) for the S8M-CP04-RS. °C Note If the...
  • Page 75 Setting the Current Tripping Type: C-T (Cutoff Type) This parameter can be set in protection level 0 only. If the S8M is in protection level 0, press the Key from the cur- rent tripping value (C-V) display to switch to the current tripping c - t type setting display.
  • Page 76 Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to A-V display. If you want to confirm the new setting, press the (Return to A-V display.) Key again from the A-V display.
  • Page 77 Key is pressed, the SV display will 2 3 4 flash. When the flashing stops, the new setting will be saved and the S8M will return to A-T dis- play. If you want to confirm the new setting, press the (Return to A-T display.)

  • Page 78: Shared Parameter Settings

    Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to V-U display. If you want to confirm the new setting, press the (Return to V-U display.) Key again from the V-U display.
  • Page 79 Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to V-O display. If you want to confirm the new setting, press the (Return to V-O display.) Key again from the V-O display.
  • Page 80 When the Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to TIM dis- play. If you want to confirm the new setting, press the (Return to TIM display.) Key again from the TIM display.
  • Page 81 Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to TMP display. If you want to confirm the new setting, press the (Return to TMP display.) Key again from the TMP display.

  • Page 82: Special Settings And Communications Settings

    Special Settings and Communications Settings Section 4-8 Special Settings and Communications Settings The startup sequence setting display (UPS) will appear if the S8M is in protec- tion level 0 and the Down Key ( ) is pressed from the over-temperature out- put value setting display (TMP), which was described at the end of 4-7 Shared Parameter Settings.
  • Page 83 4, the display will switch to the external tripping input setting display (TRG). Note The shutdown sequence function sets the time that the S8M waits before cut- ting off each branch output when the branch outputs are cut off by the external tripping input or communications.
  • Page 84 Key is pressed, the SV display will flash. When the flashing stops, the new setting will be saved and the S8M will return to TRG display. If you want to confirm the new setting, press the (Return to TRG display.) Key again from the TRG display.
  • Page 85 ) is pressed from the external tripping input display (TRG) for branch out- put 4. Set the S8M's unit number when using 1:N communications with the host computer. The unit number can be left at its default value u n o (0) when communicating 1:1 with the computer.
  • Page 86 Key is pressed, the setting will flash. When the flashing stops, the new setting will be saved and the S8M will return to the “BPS” display. If you want to confirm the new setting, press the (Return to "BPS" display.) Key again from the BPS display.
  • Page 87 When the Key is pressed, the setting will flash. When the flashing stops, the new setting will be saved and the S8M will return to the LEN display. If you want to confirm the new set- (Return to LEN display.) ting, press the Key again from the LEN display.
  • Page 88 Key is pressed, the setting will flash. When the flashing stops, the new setting will be saved and the S8M will return to the PTY display. If you want to confirm the new setting, press the Key again from the PTY display.
  • Page 89 When the Key is pressed, the setting will flash. When the flashing stops, the new setting will be saved and the S8M will return to SWT display. If you want to confirm the new setting, press the (Return to SWT display.) Key again from the SWT display.
  • Page 90 If “yes” was selected, the run time will be cleared and the S8M will return to CLR display. (Return to CLR display.) If you want to confirm that the run time was cleared, read the run time in Run Mode.

  • Page 91: Trial Operation To Actual Operation

    Trial Operation to Actual Operation A connection test can be performed on each branch output in Test Mode. After installing the S8M, wiring, and setting the parameters, the connection test can be used to test operation before actual operation. When the S8M is shipped from the factory, all branch outputs are disconnected. The branch outputs that are being used must be connected in Test Mode.

  • Page 92: Test Mode

    Test Mode before starting actual operation of the equipment. The S8M must be set to protection level 0 or 1 in order to switch to Test Mode. (It is not possible to switch to Test Mode when the S8M is set to protection level 2.)
  • Page 93 If the Down Key ( ) is pressed, SET will be displayed. At this point, the S8M will switch to Setting Mode if the s e t Mode Key ( ) is pressed.

  • Page 94: Connection/Disconnection Test

    If the Down Key ( ) is pressed, the display will flash Flashing the word “on” to indicate that the S8M is ready to con- nect branch output 1. To connect branch output 2, press the Mode Key ( V A kh °C s...

  • Page 95: Checking Sequence Operation

    Mode Selection Menu's TST display. If no keys are pressed for 5 s, the S8M will automatically return to the last operating mode. If the S8M is turned OFF in Test Mode, it will restart in Test Mode the next time that the power is turned ON.

  • Page 96: Run Mode

    Key ( ) to change to Run Mode. (If no keys are pressed within 5 s, the °C 2 3 4 S8M will automatically return to the last operating mode.) s e t °C 2 3 4 r u n °C...
  • Page 97 Up Key ( ) to change the dis- play to “YES.” °C 2 3 4 (If no keys are pressed within 5 s, Flashing the S8M will automatically return to the last display.)
  • Page 98 °C 2 3 4 Note (1) The S8M, however, contains a current-restricting circuit, so the peak val- ue is not necessarily an accurate measure of the peak inrush current of the connected device. (2) Due to the startup delay (page 24) the peak output current display value...

  • Page 99: Support Tool

    Support Tool This section explains how to use the S8M Digital Multicircuit Protector's Support Tool. Installing the Support Tool ........

  • Page 100: Installing The Support Tool

    Installing the Support Tool Section 6-1 Installing the Support Tool The S8M Support Tool can be used to set parameters, monitor operating con- ditions, and manage parameter files in the S8M Digital Multicircuit Protector. RS-232C port RS-232C cable (User-assembled) Support Tool...
  • Page 101 Net Framework 1.1 environment: Double-click S8M_SUPPORT_TOOL-EN.msi. When the S8M Support Tool has already been installed and you are install- ing again to repair or upgrade the software, use the Windows Add/Remove Programs function to uninstall the existing program before installing the new program.
  • Page 102 3. The following Installation Complete message will be displayed if the instal- lation was completed normally. Click the Close Button. 4. If the installation was completed normally, there will be an OMRON direc- tory in the Programs Menu and an S8M Support Tool program in the OMRON directory.

  • Page 103: Starting The Support Tool

    Section 6-2 Starting the Support Tool To start the S8M Support Tool, select Programs - OMRON - S8M Support Tool - S8M Support Tool from the Start Menu. When the Support Tool starts, it opens the Parameter Setting Window's Basic Settings Tab Page.
  • Page 104 Displays the Support Tool's version number. Note (1) If the Initialize menu item is selected, all of the S8M's parameters will be reset to their default values. The operating mode will be switched to Set- ting Mode and all branch outputs will be disconnected.

  • Page 105: Setting And Saving Parameters

    The parameters set in this window are just set in the Support Tool. The edited parameters must be downloaded to the S8M to change the S8M's parame- ters. Basic Settings Tab Page...
  • Page 106 (3) The external signal input's tripping operation can be enabled or disabled independently for each branch output. (4) The setting ranges for the abnormal current tripping value and overcur- rent alarm value are slightly different in the S8M models. If a value that is...
  • Page 107 When a file is saved, a note such as the output's name can be entered in the Comment Field. The comment is not transferred to the S8M, so it is just used as a comment in the Support Tool itself.
  • Page 108 Click the OK Button. Note (1) Parameters can be downloaded to the S8M when it is in Run Mode or Test Mode. The S8M's operating mode will not change after the down- load. (2) If the communications settings are changed by downloading parameters,...
  • Page 109 Setting and Saving Parameters Section 6-3 Uploading the This operation reads the S8M's parameters from the S8M to the Support Tool. Parameters Connect the S8M and computer with the RS-232C cable. Read parameters. RS-232C cable Support Tool 1,2,3... 1. Select Communications - Upload.

  • Page 110: Monitoring

    Monitoring Section 6-4 Monitoring Use the Monitor operations to monitor the S8M's operating status. RS-232C cable 1,2,3... 1. Select Monitor - Present Values or Monitor - Status. 2. The following Monitor Update Interval Window will be opened when either monitor operation is selected. Set the sampling time in the Update interval (s) field.
  • Page 111 Monitoring Section 6-4 Monitoring Present Values Peak output current clear buttons Connect output buttons Disconnect output buttons Startup Sequence Button Shutdown Sequence Button Reset Button Close Button ▲ Monitor Status Button Window item Description Input voltage (V) Displays the present input voltage. Branch Branch output Displays the present current being supplied at the branch...
  • Page 112 Monitoring Section 6-4 Window item Description Run time (kh) Displays the run time. (The run time cannot be reset from the Support Tool.) Current connection status Displays the connection status. Green: Connected. White: Cut off by an operation or external signal. Red: Cut off due to an error.
  • Page 113 Monitoring Section 6-4 Status Monitor Displays the status of the input voltage, current, internal temperature, and run time. Displays the current when the output was cut off. Displays the external tripping input status. Reset Button Close Button Displays the output connection Switches to the Present Values Window.

  • Page 114: Other Settings

    If an error message like the one below is displayed when you attempt to upload parameters, download parameters, or monitor operation, verify that the COM port settings match the S8M's communications settings. Select Communications - COM Port Settings. The Communication Settings Window will be displayed. Set each parameter...
  • Page 115 Other Settings Section 6-5 Set the port number to the computer's RS-232C port number. Setting the Protection Select Edit - Special Settings. Level The Special Settings Window will be displayed. Set the protection level. Refer to page 54 for details on protection levels. The protection level setting will become effective after the download is com- pleted, just like the other parameters.
  • Page 116 This operation does not directly initialize the S8M's parameters; it just initial- izes the parameters in the display windows. Initializing the S8M's 1. When you want to initialize the parameters in the S8M, select Communi- Parameters cations - Initialize Parameters.

  • Page 117: Communications

    SECTION 7 Communications This section describes the communications provided by the S8M. CompoWay/F Communications Specifications ..... . . Frame Structure..........

  • Page 118: Compoway/F Communications Specifications

    Connecting to the Network RS-232C cable Refer to 3-4 RS-232C Port Wiring (S8M-CP04-R and S8M-CP04-RS Only) for details on assembling and connecting a RS-232C cable. Communications Specifications Connection configuration...

  • Page 119: Frame Structure

    Communications Programs are created in the host computer to set or monitor parameters in the Control Method S8M, so the descriptions in this section are from the standpoint of the host computer. CompoWay/F is OMRON's unified communications protocol for general-pur- pose serial communications.

  • Page 120: Response Frame Structure

    Frame Structure Section 7-2 7-2-2 Response Frame Structure ■ Normal Response End code Node No. Subaddress FINS-mini command text ■ Response if Specified FINS Command was not Executed End code Node No. Subaddress FINS-mini command text ■ Response for Command Frame Error End code Node No.
  • Page 121 Frame Structure Section 7-2 End Code Examples The following examples show some errors and corresponding end codes. Missing Subaddress, SID, and FINS-mini ■ Command Node No. ■ Response End code Node No. Subaddress The subaddress is 00 and the end code is 16 (subaddress error). Subaddress Less than 2 Characters, Missing SID and FINS-mini ■...
  • Page 122 Frame Structure Section 7-2 Missing FINS-mini ■ Command Node No. Subaddress ■ Response End code Node No. Subaddress The end code is 14 (format error). Incomplete MRC and SRC Codes in FINS-mini ■ Command FINS-mini Node No. Subaddress The SRC is missing one character. ■...

  • Page 123: Fins-Mini Structure

    Frame Structure Section 7-2 Invalid Subaddress and BCC ■ Command Node No. Subaddress ■ Response End code Node No. Subaddress The end code is 13 (BCC error). There was a subaddress error, but the BCC error has a higher error priority. 7-2-3 FINS-mini Structure PDU Structure...
  • Page 124 Current when abnormal current trip- 0000 to 0064 (0.0 to 10.0 A) ping occurred in branch output 1 (Redundant abnormal current tripping for the S8M-CP04-RS only) 1011 Current when abnormal current trip- ping occurred in branch output 2 (Redundant abnormal current tripping...
  • Page 125 Frame Structure Section 7-2 Address Name Data range 1020 Current when abnormal current trip- 0000 to 0064 (0.0 to 10.0 A) ping occurred in branch output 1 1021 Current when abnormal current trip- ping occurred in branch output 2 1022 Current when abnormal current trip- ping occurred in branch output 3 1023...
  • Page 126 Frame Structure Section 7-2 Parameters ■ Variable Type 81 Address Name Data range 0000 Undervoltage alarm value 00B4 to 0108 (18.0 to 26.4 V) 0001 Overvoltage alarm value 00C8 to 0120 (20.0 to 28.8 V) 0002 Over-temperature output value 0019 to 0050 (25 to 80°C) 0003 Run time value 0001 to 03E7 (1 to 99.9 kh)

  • Page 127: Details Of Services

    The number of elements is expressed in 2-byte hexadecimal. There are rela- tively few variables in the S8M and the setting range for the number of ele- ments is 0 to 13 so that all of the monitored values can be accessed together.
  • Page 128 Details of Services Section 7-3 (3) Number of Elements Number of Processing elements 0000 The read operation is not performed (read data is not appended to the service response PDU), and processing ends in “normal completion.” 0001 to 000A The read operation is performed, and processing ends in “nor- mal completion”...
  • Page 129 Service Response PDU Response Code (1) Variable Type and Write Start Address The definitions are different for each product. (2) Bit Position The S8M does not support bit access. Fixed to “00.” (3) Number of Elements Number of Processing elements...

  • Page 130: Read Controller Information

    Read Controller Information Section 7-4 • In this case, the Write Start Address setting is correct, but the number of elements (3) exceeds the specified range. Address Variable area Write Start Address → * * * * * * * * ←...
  • Page 131 Read Controller Information Section 7-4 (1) Model The S8M's model number is returned in 20 bytes of ASCII data. If the data is less than 20 bytes long, the remaining bytes will be padded with spaces (20 hex). The following table shows the model number format.

  • Page 132: Read Controller Attributes

    A specifications code follows the model number. The following table shows the model number format. Model Code (4 bytes) Same in all models S8M- Input voltage Code (1 byte) 12 V 24 V Number of branch outputs...

  • Page 133: Read Controller Status

    Read Controller Status Section 7-6 Read Controller Status This service reads the operating status and error status. ■ Service Request PDU ■ Service Response PDU Response Code Operating Related Information Status (1) Operating Status 0: Connected; 1: Cut off The connection status is shown for each output, regardless of the cause of the cutoff.

  • Page 134: Echoback Test

    Echoback Test Section 7-7 (3) Response Codes Response Error name Cause Error code priority 1001 Command too long The command is too long. 0000 Normal completion No error Echoback Test This service performs an echoback test. ■ Service Request PDU Test Data 0 to 47 ■...

  • Page 135: Operation Command

    Operation Command Section 7-8 Operation Command This service performs operation command processing. ■ Service Request PDU Command Related Code Info. ■ Service Response PDU Response Code (1) Command Codes and Related Information Command Command content Related Information code Connect Each bit corresponds to a branch output. (Multiple branch outputs can be specified.) 01: Branch output 1 02: Branch output 2...

  • Page 136: Response Code List

    Response Code List Section 7-9 (2) Response Codes Response Error name Cause Error code priority 1001 Command too long The command is too long. 1002 Command too short The command is too short. 1100 Parameter error Command code and related information are wrong.

  • Page 137: 7-10 Ascii List

    ASCII List Section 7-10 7-10 ASCII List...
  • Page 138 ASCII List Section 7-10...

  • Page 139: Error Processing

    Error Processing This section explains how to troubleshoot errors that may occur when using the S8M. Troubleshooting ..........

  • Page 140: Troubleshooting

    Troubleshooting Section 8-1 Troubleshooting If the S8M is not operating properly, check the items listed in the following table before requesting repairs. If the problem cannot be remedied, contact your OMRON sales representative. Stage Observed problem Possible cause Remedy Reference...

  • Page 141: Seven-Segment Error Codes

    Error Meaning Probable cause and remedy display code RAM error These are S8M system errors. When one of these error codes is displayed, contact an OMRON rep- EEPROM read error resentative regarding the error. EEPROM write error A/D conversion error...
  • Page 142 Reset the run time. If the run time time value. alarm is not needed, set the alarm value to 0.0. Over-temperature out- The S8M's internal temperature Check for a high ambient temper- exceeded the over-temperature ature and check the setting of the output value.

  • Page 143: Clearing Errors

    Reset Key. When the S8M is switched to Run Mode, the error code will be displayed and the error can be reset with the Reset Key.
  • Page 144 When error code A30 (over-temperature) and the temperature are displayed (A30) Displayed alternately on the seven-segment display, there are two possible causes. Check whether the S8M's internal temperature is too high or the setting of the over-temperature output value is too low. Run Time Alarm (A23)
  • Page 145 Clearing Errors Section 8-3 Example Error Display in the Present Values Window Current when output was cut off. Lit red because the Reset Button output was cut off.
  • Page 146 Clearing Errors Section 8-3...

  • Page 147: Glossary

    Appendix A Glossary The following table lists terms related to the S8M Digital Multicircuit Protector and a brief description of the terms. For details, see the referenced page. Term Meaning Page abnormal current tripping When a branch output's current exceeds the set value, that output is cut off.
  • Page 148 (ALM) is turned OFF. The alarm value can be set between 20.0 and 28.8 V. peak output current The peak output currents for branch outputs 1 to 4 can be read in Run Mode. The peak output currents can be cleared using S8M key operations or from the Support Tool. protection level...
  • Page 149 Glossary Appendix A Term Meaning Page TRP is an abbreviation for the tripping alarm output terminal. This output is 14, 41 turned OFF when an abnormal current or abnormal voltage exceeds the corre- sponding set value. UL Class 2 output An output that complies with the UL Class 2 rating.
  • Page 150 Glossary Appendix A...

  • Page 151: List Of Operations

    List of Operations Mode Selection Menu Operations Mode Selection Menu Mode Selection Menu Select Run Mode S8M was in Run Mode at one time. r u n Run Mode Select Setting Mode S8M was never switched to Run Mode. s e t...
  • Page 152 When the S8M is in protection level 0, all of the settable items will be displayed in Setting Mode. When the S8M is in protection level 1 or 2, only the items in Send wait time will be displayed.
  • Page 153 The ON/OFF display and the branch output number will flash in Test o f f o f f Mode. When "ON" is flashing, the S8M is waiting to connect the output. Press Key to connect the output. When "OFF" is flashing, the S8M is waiting to disconnect the output. Press the Key to disconnect the output.
  • Page 154 List of Operations Appendix B Run Mode Power ON after being in Run Mode Mode Selection Menu Mode Selection Menu Run Mode Select Run Mode. r u n Select Setting Power supply voltage Mode. 2 4. 1 s e t (Press for 3 s.) kh °C Branch output 1 monitoring operations...

  • Page 155: Revision History

    Revision History A manual revision code appears as a suffix to the catalog number on the front cover of the manual. Cat. No. Z241-E1-01 Revision code The following table outlines the changes made to the manual during each revision. Page numbers refer to the previous version.
  • Page 156 Revision History...
  • Page 157 The Netherlands Tel: (31)2356-81-300/Fax: (31)2356-81-388 OMRON ELECTRONICS LLC 1 East Commerce Drive, Schaumburg, IL 60173 U.S.A. Tel: (1)847-843-7900/Fax: (1)847-843-8568 OMRON ASIA PACIFIC PTE. LTD. 83 Clemenceau Avenue, #11-01, UE Square, 239920 Singapore Tel: (65)6835-3011/Fax: (65)6835-2711 OMRON (CHINA) CO., LTD. Room 2211, Bank of China Tower,...
  • Page 158 Power & 180W / 24V / 7.5A DIN Rail 247537 S8VS-24024 Buy on EAN Power & 240W / 24V / 10A DRA 323509 S8M-CP04-RS Buy on EAN Power & Protector Multicircuit 24Vdc 324847 S8M-CP04 Buy on EAN Power & Protector Multicircuit 24Vdc...

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