Zener MSC-3 Instruction Manual
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Zener MSC-3 Instruction Manual

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Summary of Contents for Zener MSC-3

  • Page 1 MSC-3 Instruction Manual ZENER...
  • Page 2 SAFETY Your MSC-3 must be applied, installed and operated in a safe manner. It is the responsibility of the user to ensure compliance with all regulations and practices covering the installation and wiring of your MSC-3.
  • Page 3 IM00092B...

  • Page 4: A Zener Drive For Every Application

    MSC-3 Instruction Manual A Zener Drive for Every Application The ZENER MSC-3 series Variable Speed Drive is suitable for all types of loads, producing greater motor torque over the full speed range with ZENER’s unique ’Flux Plus’ control algorithm. Variable Torque Loads...

  • Page 5: Zener Msc-3 Options

    Preface Zener MSC-3 Options SUPPLY VOLTAGE The ZENER MSC-3 is available to operate from the following types of power supplies; Supply Voltage Supply Phase Tolerance Model 380 to 480Vac 3 Phase -15, , +10% MSC-3R 208 to 240Vac 3 Phase...
  • Page 6 MSC-3 Instruction Manual IM00092B...

  • Page 7: Table Of Contents

    Basic power wiring diagram .......................7 Supply circuit protection and switchgear ..................7 Cable sizes ..........................7 Electrical Isolation ........................7 Fuse Circuit Breaker Ratings for All MSC-3 Models ..............8 Motor thermal protection ......................8 MSC-3 Power wiring for Single Phase Supply ..................9 MSC-3 with a DC Supply ..........................10 Installation practices for Electromagnetic Compatibility (EMC) compliance ........
  • Page 8 MSC-3 Instruction Manual A04 Menu Protect ..........................40 Remote override ..........................40 Remote override operation .......................40 De-activated State .........................40 Activated State ........................40 A05 SET CTL DEFS .........................40 B00 MOTOR ...............................41 B01 MOTOR VOLTS ........................41 B02 MOTOR AMPS ..........................41 B03 MOTOR Hz ..........................41 B04 MOTOR RPM ..........................41...
  • Page 9 MSC-3 Specifications ..........................63 MSC-3 Output Current Specifications ....................65 MSC-3 Trouble Shooting Guide .......................66 Your MSC-3 Setup Notes .........................68 Appendix A - MSC-3 Character Set ......................69 Appendix B - MSC-3 transportation sizes and weights ................70 Appendix C - Glossary ..........................71 IM00092B...
  • Page 10 MSC-3 Instruction Manual viii IM00092B...

  • Page 11: Explanation Of Symbols

    Requirements for the purchaser’s final product may be substantially different to the requirements for stand-alone inverters. The MSC-3 is intended for use only in fixed wiring applications. It is not intended for use on a flexible supply cable.

  • Page 12: Receiving

    MSC-3 Instruction Manual The MSC-3 contains a substantial EMC line filter and as a result it is unsuitable for use on earth leakage protected circuits. Mount the MSC-3 on a vertical, incombustible surface such as metal or masonry. Do not place combustible or flammable material near the MSC-3.

  • Page 13: Installation

    MSC-3 from the electrical supply. The choice is predominantly an economic one. There are many perfectly satisfactory installations where, for a variety of specific site reasons, the most effective solution results in the MSC-3 and the motor being a long distance apart.

  • Page 14: Msc-3 Mechanical Installation Information

    MSC-3 Instruction Manual MSC-3 Mechanical Installation Information Bolt Diameter Bolt Diameter Chassis A IP30 / NEMA 1 (3 - 11 Amps) Bolt Diameter Bolt Diameter Chassis A IP66 / NEMA 4 (3 - 11 Amps) CAUTION Allow 50 mm above, below and either side of the enclosure for ventilation.
  • Page 15 Allow 75 mm above, below and either side of the enclosure for ventilation. Dimensions - tolerance +/- 1.0mm Weight Weight Model Enclosure type without with choke choke MSC-3*3 Chassis A 248mm 102mm 237mm 208mm 32mm 230mm 3.5Kg MSC-3*5 IP30 / NEMA 1 MSC-3*7 9.8”...
  • Page 16 MSC-3 Instruction Manual Bolt Diameter Bolt Diameter Chassis C (55 - 170 Amps) CAUTION Allow 100 mm above, below and either side of the enclosure for ventilation. Dimensions - tolerance +/- 1.0mm Weight Weight Model Enclosure type without with choke...

  • Page 17: Msc-3 Power Wiring For 3 Phase Supply

    Fuses or circuit breakers of the current limiting type are preferred in order to minimise the total energy let through in the unlikely, but possible, event of a major arcing fault in wiring or within MSC-3 enclosure. Installations that are required to be UL compliant must use UL listed fuses of the amp rating and class detailed on page 8 of this manual.

  • Page 18: Fuse Circuit Breaker Ratings For All Msc-3 Models

    For complete motor thermal protection, microtherms or thermistors should be installed in the motor winding and wired to the appropriate trip relay. MSC-3 Extended Features Option provides a thermistor relay function and other features.

  • Page 19: Msc-3 Power Wiring For Single Phase Supply

    Do not include other conductors inside the screen. Any model MSC-3 can be operated from a single phase AC supply. In addition to the electrical installation information on pages 7 and 8, the following additional constraints apply to operation on a single phase power supply: •...

  • Page 20: Msc-3 With A Dc Supply

    MSC-3 with a DC Supply Some models of MSC-3 may be used with a DC supply. There are a number of issues to be considered in properly applying MSC-3 in this situation, some of which involve the characteristics of the particular DC supply to be used.

  • Page 21: Installation Practices For Electromagnetic Compatibility (Emc) Compliance

    In order to achieve the required electrical performance at high frequencies, it is essential that the screen of the cable have a 360º connection to both the MSC-3 gland plate and the motor terminal box. The correct type of metal cable gland to suit the screened cable should be used. The protective earth (PE) conductor should be terminated in the usual way to meet the local wiring codes at the ground terminals provided in the MSC-3 and the motor.
  • Page 22 MSC-3 Instruction Manual Control cable gland. MSC - 3 ZENER ELECTRIC No special EMC requirement. Plastic or other cable gland may be used. ENTER EXIT STOP See gland plate detail on left for control cable exit location Gland Plate Detail...
  • Page 23 Installation MSC - 3 ZENER ELECTRIC ENTER EXIT STOP CAUTION Remove gland plate before drilling holes No special EMC requirement here. Plastic or other cable gland may be used. AC supply Screened control screened cable cable not required Metal cable gland with Screened 360°...
  • Page 24 MSC-3 Instruction Manual MSC - 3 ZENER ELECTRIC ENTER EXIT STOP CAUTION Remove gland plate before drilling holes No special EMC requirement here. Plastic or other cable gland may be used. Metal cable gland with 360° screen termination Screened control cable...
  • Page 25 Installation MSC - 3 ZENER ELECTRIC ENTER EXIT STOP CAUTION BRAKING RESISTOR OPTIONAL Remove gland plate before drilling holes No special EMC requirement here. Metal cable gland with 360° screen Screened termination control cable AC supply screened cable Screened not required...
  • Page 26 MSC-3 Instruction Manual IM00092B...

  • Page 27: Control Connections And Configuration

    Assignment of particular control functions to terminals (inputs) and relays (status outputs). These can be selected individually or from one of 8 preset configurations. The MSC-3 control terminals can be configured, on an individual terminal basis, to suit a wide variety of applications. This provides enormous flexibly.

  • Page 28: Industrial Terminals Typical Connection Diagram - Terminal Config 1

    This section shows the typical configurations applicable to a wide range of industrial applications. The motor speed may be controlled from the local console on the MSC-3 or a remote signal source. Switching between local and remote operation is controlled by a contact closure. This terminal configuration is the factory default.

  • Page 29: Quick Setup For Terminal Config 1

    See Remote Override Operation on page 40. +5V D1 In “local” the MSC-3 is stopped and started from the front panel console. In “remote”, the MSC-3 stop / start is controlled from the terminal strip. The source of the speed Local Remote reference in both modes may be independently configured...
  • Page 30 CONSOLE is displayed. No speed reference wiring is panel to control the speed. necessary. STEP 4. Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternative values may be used to suit the application. Page for detailed Menu...

  • Page 31: Application: Water Pumping With Automatic Pressure Control

    Enter. STEP 4 Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternate values may be used to suit the application. See the Extended Features Option manual for information on tuning the PID performance.

  • Page 32: Quick Setup For Terminal Config 4

    Wire terminals 5 and 6 as shown. +5V D1 In “local” the MSC-3 is stopped and started from the front panel console. In “remote”, the MSC-3 stop / start is controlled from the terminal strip. The source of the speed reference in both...
  • Page 33 CONSOLE is displayed. No speed reference wiring is panel to control the speed. necessary. STEP 4 Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternative values may be used to suit the application. Page for detailed Menu...

  • Page 34: Application: Machine Drive With Forward And Reverse Jog

    See page 53 +5V D1 COM SCN Note: Since no terminal is assigned to the REMOTE function, the MSC-3 will operate in the REMOTE mode by default. See page 58. Stop/ Reset Forward Jog Forward Jog Reverse STEP 3.
  • Page 35 CONSOLE is displayed. No speed reference wiring is panel to control the speed. necessary. STEP 4 Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternative values may be used to suit the application. Page for detailed Menu...

  • Page 36: Hvac Terminals Typical Connection Diagram - Terminal Config 3

    The black square represents the moveable tab in the switch. Local/Remote Essential Services Override Optional Wiring In “local” the MSC-3 is controlled from the If selection between front panel console. local and remote is Power up start up In “remote”, the...

  • Page 37: Quick Setup For Config 3

    +5V D1 In “local” the MSC-3 is stopped and started from the front panel console. In “remote”, the MSC-3 stop / start is controlled from the terminal strip. The source of the speed reference in both modes may be independently configured...
  • Page 38 CONSOLE is displayed. No speed reference wiring is panel to control the speed. necessary. STEP 4. Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternative values may be used to suit the application. Page for detailed Menu...

  • Page 39: Application: Supply Air Or Smoke Spill Fan

    0..20mA control board 4..20mA information STEP 3. Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternative values may be used to suit the application. Page for detailed Menu Item Suggested Setting information Terminal strip configuration...

  • Page 40: Application: Return Air Fan

    0..20mA control board 4..20mA STEP 3 Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternate values may be used to suit the application. Page for detailed Menu Item...

  • Page 41: Application: Stair Pressurisation Fan With Internal Pid

    PID controller function provided by the MSC-3 extended features option. The MSC-3 is configured to run in essential services override (ESO) mode. Prior to commissioning, you will need to know the type of air pressure transducer signal that is to be used (0-10V,4-20mA etc).

  • Page 42: Application: Stair Pressurisation Fan With External Pid

    This setup is for a typical HVAC stair pressurisation fan application that requires air pressure control using an air pressure transducer and a PID controller external to the MSC-3. The MSC-3 is configured to run in essential services override (ESO) mode. Prior to commissioning, you will need to know the type of speed signal that is to be used (0-10V, 4-20mA etc) between the output of the external PID controller and the MSC-3.

  • Page 43: Application: Cooling Tower Fan With Reverse Acting Internal Pid

    Press ▲ until you see P22 ANALOG INPT. Press Enter. Set the REF AT 0% to –25%. Press Enter. STEP 4 Follow the instructions on page 34 for MSC-3 startup, setting the parameters according to the table below. Alternate values may be used to suit the application. Page for detailed...

  • Page 44: Msc-3 Start Up

    INPUT/OUTPUT menus to set up the MSC-3 before running the motor to prevent any unexpected motor operation. The MSC-3 is supplied with a link between the En terminal and the +5V terminal which is all that is required to run the MSC-3 from the console. A connection between these two terminals must always be made for the motor to run.

  • Page 45: Console Push Button Operations

    Menu mode. MSC-3 Menu mode The Menu mode is entered from the Run mode by pressing the ESC push button (pressing ESC again will return to Run mode). Use the ▲ and ▼ push buttons to display each menu item. To enter the menu press the ...

  • Page 46: Control Console Menu

    MSC-3 Instruction Manual Control Console Menu The following pages show the structure of the control console menu. V01 Hz* A00 DISPLAY V02 RPM A01 RUN VARIABLE V03 %Load V04 Amps A02 RUN SCALE V05 Volts DC V06 kW A03 RUN UNITS...
  • Page 47 P41R OP DIG OUT G08 CONFIG 7 V07 Volts AC G09 CONFIG 8 J00R OPTION DEFS V08 Deg C Disable MSC-3 to change CONFIG V09 Ripple P05R OPTION REFS V10 I2T Used P02R ZERO OPT% P06R USER REF1 P38R PID Output...
  • Page 48 MSC-3 Instruction Manual K00 COMMS SETUP K01 PROTOCOL K02 DRIVE ID K03 GROUP ID K04 FAULT LOG K05 VIEW LOG K06 PF / UV MASK K07 CLEAR LOG K08 RUN LOG K09 HOURS RUN K10 kWH K11 CLEAR LOG K12 ESO LOG...

  • Page 49: A00 Display

    Default Value: Hz The MSC-3 is able to display the output frequency in user defined units. The default setting is Hz, but it can be changed, so that the display will show user preferred units. For example, mtr/min, Cans/hr or anything else up to 8 characters.

  • Page 50: A04 Menu Protect

    Alternative code values are used to activate and de-activate the remote override feature. Note that the A07 Enter Code display is accessed either by enabling menu protection, as described above, and then pressing ESC from the RUN screen or alternatively by powering up the MSC-3 with the ESC console push button depressed.

  • Page 51: B00 Motor

    Entering the Nameplate Current of your motor determines the operation points for the Flux Plus (page 43) and Slip Comp (page 44) features. This setting is not used to limit the output current of the MSC-3. Refer to D01 CURRENT LIMIT for that particular feature.

  • Page 52: C00 Performance

    0 to 195Hz This sets the frequency that the MSC-3 will run when given a run signal. The value is entered in Hz. There must be a difference of at least 5Hz between the MIN Hz and the MAX Hz setting. For example, if MAX Hz is set to 45Hz, then the largest allowed value for MIN Hz is 40Hz.

  • Page 53: C04 Accel Time

    The ACCEL TIME is the time taken for the motor to go from zero speed up to motor rated speed (assuming minimum S TIME). An MSC-3 with Motor Hz set to 50 Hz and an ACCEL TIME of 10 seconds will take 10 seconds to go from 0 Hz to 50 Hz.

  • Page 54: C09 Slip Comp

    Slip Comp can provide compensation for this varying slip to produce near constant shaft speed under varying loads. The MSC-3 estimates the slip of the motor using the parameters entered in the MOTOR parameters menu and the motor load. A value of 100% nominally correct for the slip speed implied by the B04 MOTOR RPM setting.

  • Page 55: D00 Protection

    65. This sets the maximum output current of the MSC-3. If excessive load is applied to the motor, the drive will only apply this amount of current to the motor until the overload condition is removed. Current limiting is achieved by reducing the speed of the motor.

  • Page 56: D03 I2T Zero Hz

    H01 DISABLE (default) This feature allows the MSC-3 to operate from a DC Input Supply. The DC Supply voltage should be at least 1.414 times higher than the motor voltage. Press Enter to view the setting. Use the up or down push button to enable or disable DC Input.

  • Page 57: E00 Stop/Start

    This controls the operation of the MSC-3 when any stop signal is given. RAMP TO STOP means that the MSC-3 will continue to control the motor in order to bring it to a stop in the time set by the DECEL TIME and S TIME.

  • Page 58: E06 Dynamic Brk

    0 to 15 restarts This number indicates how many times the MSC-3 will attempt to restart after a trip. For the motor to run after the trip is cleared, the drive must be given a valid run command. Select 0 restarts in order to de- activate Auto Restart.

  • Page 59: F00 References

    The ESO Ramp time is the time taken for the motor to go from zero speed up to motor rated speed (assuming minimum S TIME). A MSC-3 with the Motor Hz set to 50 Hz and an ESO Ramp of 10 seconds will take 10 seconds to go from 0Hz to 50Hz.

  • Page 60: F04 Jogfwd

    MSC-3 Instruction Manual F04 JOGFWD Choices: R00 AN1 R03 PRESET (default) R04 MOTORIZD POT R07 CONSOLE REF Options‡ When the drive is running in JOGFWD it will take its speed reference from this source. Use the up and down push buttons to select a reference and press Enter to accept the selection or ESC to abandon.

  • Page 61: Speed References

    When the Analog Input is selected as a speed reference for any of the different operating modes, two parameters need to be checked. The MSC-3 will let you do this every time the analog input is selected as a reference. They are R01 REF AT 0% and R02 REF AT 100%. Use the up or down buttons to change the values (if required).

  • Page 62: R01 Ref At 0

    Pot reference will always start from zero after power is applied. R07 CONSOLE REF When this is selected, the reference is set from the console using the up and down arrows when the MSC-3 is in the run mode. IM00092B...

  • Page 63: G00 Input/Output

    TRIP RESET ~ STOP means the logical inverse of STOP i.e. this input must have 5V applied for the drive to run. MSC-3 is disabled by disconnecting terminal 6. This is equivalent to applying zero volts to terminal 6. IM00092B...

  • Page 64: G02 Config 1 Industrial

    TRIP LATCH LATCH The MSC-3 only runs in remote. The remote reference can be set to any available option. AN1 is the default speed reference. To run the drive in reverse the Reverse Direction must be enabled. G04 CONFIG 3 HVAC...

  • Page 65: G06 Config 5

    JOGFWD JOGREV TRIP RESET The MSC-3 only runs in remote. Analog Input 1 is the speed reference for FWD and REV. JOGFWD and JOGREV use the internal PRESET as the jog speed source. Go to G13 DIG IN 3 or G14 DIG IN 4 to change the jog speed or source after you have selected this terminal configuration.

  • Page 66: G10 Enable/Reset

    When set to ENABLED, applying a positive edge to the ENABLE input will attempt to reset a trip condition. When this feature is set to DISABLED the ENABLE input cannot reset the MSC-3 after a trip.

  • Page 67: Control Terminal Functions

    MSC-3 Startup Control Terminal Functions Function Description Parameters A momentary contact closure on this input will start the motor in the forward direction. FWD & LATCH When the input is removed the motor continues to run in None the forward direction (latching). It requires an I02 ~STOP function to be assigned in order to break the latch and stop the motor.
  • Page 68 MSC-3 Instruction Manual Function Description Parameters While this input is held the MSC-3 will operate in essential services override (ESO). After selecting this function you will be asked for a speed source to be selected. When this input is activated: •...

  • Page 69: G15 Relay1

    Indicates the presence of a trip that has stopped the output of O01 TRIP None the drive O02 ESO Indicates that the MSC-3 is in the essential services mode. None O03 PROOF Indicates that the MSC-3 is enabled and not tripped. None O04 ZERO SPEED Indicates that the MSC-3 is at zero speed.

  • Page 70: O16 Load Warning

    The function is set up for failsafe operation. When the load is in the region above the characteristic line, or the MSC-3 is stopped, the relay is energised. If the detected load is in the region below this line, the relay is de-energised.

  • Page 71: O09 Output Alarm

    fixed threshold of 12.5% of the motor rated name-plate current when the MSC-3 is running. The usual application of this function is to sense the disconnection of the motor. O16 LOAD WARNING should be used for sensing the motor load torque. The table below lists the states of the relay and the corresponding conditions.

  • Page 72: Display Messages

    MSC-3 Instruction Manual Display Messages The MSC-3 displays a variety of messages on the second line of its display to indicate the drive status. These messages may be divided into two types, trip messages and run messages. The MSC-3 will protect itself under a variety of fault conditions. When one of these conditions is experienced the MSC-3 will trip, shut down the motor output and display one of the following messages.

  • Page 73: Msc-3 Specifications

    MSC-3 Specifications MSC-3 Specifications Differential Input Input Supply Voltage 0 to 5V range MSC-3R 380 to 480Vac, 3Ø 0 to 10V range MSC-3J 440 to 600Vac, 3Ø 0 to 20mA range MSC-3L 208 to 240Vac, 3Ø 4 to 20mA range...
  • Page 74 MSC-3 Instruction Manual Model Max. Supply Short Max. Fuse Max. Wire Size Max. Tightening Circuit Rating Fuse Class Torque (Amps rms Size Symmetrical) 240V MSC-3L3 18,000A, 240V 10 A.W.G (6mm 15.6 in.lb (1.76Nm) MSC-3L5 18,000A, 240V 10 A.W.G (6mm 15.6 in.lb (1.76Nm)

  • Page 75: Msc-3 Output Current Specifications

    MSC-3*170 132.6 * L, R or J for models up to MSC-3 *40. L or R for models MSC-3 *55 and up. These currents apply to all ranges MSC-3 at an ambient temperature of 40ºC (104ºF) independent of the input voltage. MSC-3 may be applied at higher ambient temperatures at reduced ratings. Please consult the factory for ratings for ambients above 40ºC (104ºF).

  • Page 76: Msc-3 Trouble Shooting Guide

    MSC-3 Trouble Shooting Guide Symptom Cause Remedy Front Display does not Input power wiring not Check input power wiring, refer to the MSC-3 illuminate. connected properly. Electrical Installation Diagram. Input voltage not within Measure the input voltage at the MSC-3 input specification.
  • Page 77 Voltage limit circuit is This is a normal operating mode for the decelerate in the time operating. MSC-3. When the load is being decelerated set by the DECEL ramp too fast, the MSC-3 limits the voltage and V LIMIT message regenerated by the motor by extending the appears.

  • Page 78: Your Msc-3 Setup Notes

    MSC-3 Instruction Manual Your MSC-3 Setup Notes Photocopy this page or complete in pencil Site Designator ..........................MSC-3 Serial No............User Parameters Date......User Default User Default A00 DISPLAY E00 STOP/START A01 RUN VARIABLE E01 STOPPING RAMP A02 RUN SCALE 50.0...

  • Page 79: Appendix A - Msc-3 Character Set

    Appendix Appendix A - MSC-3 Character Set IM00092B...

  • Page 80: Appendix B - Msc-3 Transportation Sizes And Weights

    MSC-3 Instruction Manual Appendix B - MSC-3 transportation sizes and weights The table below lists the approximate dimensions and weights for MSC-3 models in the standard packing material. Weight Weight Model Enclosure Type Shipping Dimensions without Packaging with Choke Choke...

  • Page 81: Appendix C - Glossary

    Appendix Appendix C - Glossary ~STOP The logical inverse of STOP. This circuit must be closed for the MSC-3 to run. 2-wire control Control of the stop / start function by a simple contact closure (eg a start / run switch contact).
  • Page 82 AC input current measured in a way that reflects the true heating value of the current. The terminal on the MSC-3 for the connection of the screen of all cabled associated with analog and digital control functions. Underwriters Laboratories Inc. An American organization involved in product safety standards and certification.
  • Page 83 Appendix IM00092B...
  • Page 84 DELIVERY ADDRESS POSTAL ADDRESS 366 Horsley Road P.O. Box 4462 Tel: +61-2-9795 3600 MILPERRA MILPERRA DC Fax: +61-2-9795 3611 NSW 2144 NSW 1891 Email: zener@zener.net ZENER AUSTRALIA AUSTRALIA http:// www.zener.net © Zener Electric Pty Limited 2004 IM00092B 2 September 2004...

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