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Summary of Contents for CTI 2550-A
- Page 1 2550-A EIGHT CHANNEL ISOLATED ANALOG INPUT MODULE INSTALLATION AND OPERATION GUIDE Ver. 2.2 CTI Part # 062-00197-022 *062-00197-022* 2550-AIOG 092005...
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- Page 3 Every effort has been made to ensure the accuracy of this document; however, errors do occasionally occur. CTI provides this document on an "as is" basis and assumes no responsibility for direct or consequential damages resulting from the use of this document. This document is provided without express or implied warranty of any kind, including but not limited to the warranties of merchantability or fitness for a particular purpose.
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Page 5: Preface
PREFACE This Installation and Operation Guide provides installation and operation instructions for the CTI 2550-A Eight Channel Isolated Analog Input Module for SIMATIC® 505 programmable controllers. We assume you are familiar with the operation of SIMATIC® 505 series programmable controllers. Refer to the appropriate SIMATIC® user documentation for specific information on the SIMATIC®... - Page 6 CT I 2550-A Installation and O peration G uide...
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Page 7: Usage Conventions
Notes alert the user to special features or procedures. CAUTION: Cautions alert the user to procedures which could damage equipment. WARNING: Warnings alert the user to procedures which could damage equipment and endanger the user. CT I 2550-A Installation and O peration G uide... - Page 8 CT I 2550-A Installation and O peration G uide...
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Page 9: Table Of Contents
2.4 Inserting the Module into the I/O Base ........16 CT I 2550-A Installation and O peration G uide... - Page 10 REPAIR POLICY ............. 31 CT I 2550-A Installation and O peration G uide...
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Page 11: Table Of Figures
TABLE OF FIGURES Figure 1 The 2550-A 8-Channel Isolated Analog Input Module ......v Figure 2 2550-A Front Panel . - Page 12 CT I 2550-A Installation and O peration G uide...
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Page 13: Chapter 1. Description
The Eight Channel Analog Input Module is a member of Control Technology’s family of I/O modules compatible with the SIMATIC® 505 programmable controllers. The Model 2550-A is designed to translate an analog input signal into an equivalent digital word which is then sent to the programmable controller (PLC). -
Page 14: Input Connector For Channels 1-8
I/O scan. 1.3 Immediate I/O The Model 2550-A Analog Input Module is fully compatible with the Immediate input instruction for the SIMATIC® 545 and 555 PLCs. -
Page 15: Figure 3 Word Input To The Plc From The Module (Unipolar)
“overrange”, and the remaining bits are not used and are set to zero. Figure 4 Word Input to the PLC from the Module (Bipolar) CT I 2550-A Installation and O peration G uide... -
Page 16: Analog To Digital Conversion
-10 to +10V Input Range Mode, Digital Word (WX)= ----------------------------------- 10 volts ± Input current (mA) x 32000 -20 to +20 mA Input Range Mode, Digital Word (WX)= ------------------------------------ 20 mA CT I 2550-A Installation and O peration G uide... -
Page 17: Example Conversion
Figure 5 Example of Change in Input Level 1.8 Effect of Out-of-Range Input Signals The Model 2550-A utilizes the overrange and underrange bit to indicate when a channel has reached individual limits. The value of the overrange or underrange condition varies from channel to channel. -
Page 18: Unipolar Mode
-10 to +10VDC range are translated to a digital word and also utilize the overrange and underrange bit. The actual limit for each channel will vary from channel to channel as described above. Figure 7 Voltage Input Limits (Bipolar) CT I 2550-A Installation and O peration G uide... -
Page 19: Figure 8 Overrange Word Value (Unipolar)
Figure 8 Overrange Word Value (Unipolar) Figure 9 Underrange Word Value (Unipolar) Figures 10 and 11 show the binary values of typical overrange and underrange conditions for Bipolar Mode. Figure 10 Overrange Word Value (Bipolar) CT I 2550-A Installation and O peration G uide... -
Page 20: Using An Input With 20% Offset
1.9.1 Using the Module with 20% Offset If all 8 inputs are used in offset mode the Model 2550-A may be configured to perform the offset calculation automatically. (See Figure 14 Configuration Jumper Locations). Jumper JP1 when enabled will configure the module such that all inputs will be scaled for 1-5VDC or 4-20mA operation. -
Page 21: Resolution
10 counts out of 32000 as a result of the multiplication and division of the incoming data word. The chart below shows the corresponding input resolution per step for each of the input configuration modes: Figure 12 Input Resolution CT I 2550-A Installation and O peration G uide... - Page 22 CT I 2550-A Installation and O peration G uide...
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Page 23: Chapter 2. Installation
The following sections discuss these important considerations. 2.1.1 Calculating the I/O Base Power Budget The Model 2550-A requires 5.2 watts of +5V power from the I/O base. Use this value to verify that the base power supply is not exceeded. 2.1.2 Input Signal Wiring Input signal wiring must be shielded twisted pair cable. -
Page 24: Unpacking The Module
CAUTION: HANDLING STATIC SENSITIVE DEVICES The components on the Model 2550-A module printed circuit card can be damaged by static electricity discharge. To prevent this damage, the module is shipped in a special anti-static bag. Static control precautions should be followed when removing the module from the bag, when opening the module, and when handling the printed circuit card during configuration. -
Page 25: Configuring The Module
2.3 Configuring the Module The Model 2550-A must be configured for voltage or current inputs, voltage range, unipolar/bipolar mode, and digital filtering/no filtering mode before wiring the input connectors and inserting the module into the I/O base. As shipped, all input channels are configured for current inputs, 5V range (see note below), unipolar mode, digital filtering enabled, and offset scaling disabled (see Figure 14). -
Page 26: Selecting Voltage Range
2.3.3 Selecting Unipolar or Bipolar Input Mode Locate the Unipolar/Bipolar Jumpers JP21-24 and JP33-36 (see Figure 14). Set each jumper to UNI for unipolar operation or BIP for bipolar operation for each input channel. CT I 2550-A Installation and O peration G uide... -
Page 27: Selecting Digital Filtering
Locate the Digital Filtering Jumper JP3 (see Figure 14). To enable digital filtering, set the jumper in the ENABLE position. Since many analog input signals contain noise, CTI recommends using digital filtering unless maximum response time is required. As shipped digital filtering is enabled for all 8 analog inputs. -
Page 28: Configuring Dip Switches To Report Hardware Configuration
14 gauge wire. The actual size wire used depends on the external device providing the input signal. Consult the device manufacturer’s recommendations for selecting the input wire size. CT I 2550-A Installation and O peration G uide... -
Page 29: Figure 16 Screw Terminal Connector Wiring
To assign an input to a specific channel, locate the appropriate channel position on the screw terminal connector as shown in the following figure: Figure 16 Screw Terminal Connector Wiring CT I 2550-A Installation and O peration G uide... -
Page 30: Connecting Voltage Input Wiring
The other end should be left in an open circuit condition. CTI recommends that the shield be terminated at the PLC end of the signal wire. Special components are installed on the module to aid in the rejection of noise. -
Page 31: Installing The Screw Terminal Connector
2.6 Installing the Screw Terminal Connector When all the input signal wires are connected to the screw terminal connector, carefully install the connector on the front of the module. Figure 18 Input Connector Assembly CT I 2550-A Installation and O peration G uide... -
Page 32: Checking Module Operation
Figure 19 Example I/O Configuration Chart In this example, the Model 2550-A module is inserted in slot 1 in I/O base 0. Data for channel 1 appears in word location WX1, data for channel 2 appears in word location WX2, etc. For your particular module, look in the chart for the number corresponding to the slot occuppied by the module. -
Page 33: Chapter 3. Troubleshooting
The module fuse F1 is not user serviceable. If this fuse is blown, the module has a serious component failure and should be returned to CTI for repair. When it is inconvenient to visually check the status indicator, use the TISOFT “Display Failed I/O” or “Show PLC Diagnostics”... - Page 34 CT I 2550-A Installation and O peration G uide...
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Page 35: Specifications
Normal Mode Rejection: >40db @ 500 Hz Connector: Removable, standard Siemens® front face connector #2587705-8006 Wire Gauge: 14-22 AWG Input Protection: Input ESD Protection: 20,000V Overrange Protection: 100V Isolation: 1500VDC channel-to-channel 1500VDC channel-to-PLC CT I 2550-A Installation and O peration G uide... - Page 36 -40 to 85 C (-40 to 185 F) Humidity: 5% to 95%, noncondensing Agency Approvals: UL, UL for Canada FM (Class 1, Div 2) CE Specifications subject to change without notice. CT I 2550-A Installation and O peration G uide...
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Page 37: Jumper Settings Log Sheet
JUMPER SETTINGS LOG SHEET Figure 21 Jumper Settings Log Record the configuration jumper settings on this log for future reference. Make additional copies if necessary. CT I 2550-A Installation and O peration G uide... - Page 38 CT I 2550-A Installation and O peration G uide...
- Page 39 USER NOTES CT I 2550-A Installation and O peration G uide...
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Page 41: Limited Product Warranty
Products become the property of CTI. Should any Product or part returned to CTI hereunder be found by CTI to be without defect, CTI will return such Product or part to the customer. This warranty does not include repair of damage to a part or the Product resulting from: failure to... - Page 42 CT I 2550-A Installation and O peration G uide...
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Page 43: Repair Policy
Authorization number (RMA) can be requested verbally or in writing from CTI main offices. Whether this equipment is in or out of warranty, a Purchase Order number provided to CTI when requesting the RMA number will aid in expediting the repair process. The RMA number that is issued and your Purchase Order number should be referenced on the returning equipment's shipping documentation.
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