24V dc Analog Block I/O Module

Transcription

1 24V dc Analog Module Installation Mount the block I/O module in a vertical (recommended) or horizontal position. Allow sufficient room around the block for cooling air flow through the block module. Refer to Figure. Figure Mounting Dimensions for the Analog Module 0.5 (2.7) 2.70 (68.8).7 (43.4) 79-NDC ANALOG BLOCK Inches (Millimeters) 0 OUTPUT Block 6.95 (76.5) 6.60 (67.6) POWER COMM FAULT INPUT (50.8) air gap on all 4 sides. Operating temperature in air gap below module must not exceed 60 o C (40 o F). Equipment Grounding Stud 30 Dimensions 6.95H x 2.70W x 3.85D (76.5H x 68.8W x 98D) 2 mounting holes for /4 inch screws CAUTION: When tightening grounding stud nut, do not exceed 5 in-lbs.

2 Figure 2 Mounting on a DIN Rail Block. Hook top of slot over DIN rail. 2. While pressing block against rail, pull down on locking lever. 3. When block is flush against rail, push up on locking lever to secure block to rail. DIN Rail A-B Pt. No. 99-DR EN (35 x 7.5mm) Locking Lever 2382 I Figure 3 Inserting Labels Labels for the front door and terminal strip are supplied with your module.. Remove die-cut labels from package. 2. Remove plastic cover on terminal strip by flexing in middle. Slip terminal designation label into built-in holders in terminal strip cover. Flex cover to install Open clear front door. Insert module designation label into slots that secure it to the door I 2

3 Connect wiring as shown in Figure 4, Figure 5 or Figure 6. Figure 4 Wiring Connections for the Analog Block Module with Voltage Input (refer to Table A) RIO BLU CLR in0 in0 in in in2 in2 in3 in3 out0 out SHD in V0 in I0 in V in I in V2 in I2 in V3 in I3 Vdc out0 out V dc Supply Voltage Input User Analog Input Device Output User Analog Output Device 30 Analog signals must be within the +0V common mode voltage range which is referenced to the analog system common (). If an input channel floats outside of this range, invalid input readings will result. 3

4 Figure 5 Wiring Connections for the Analog Block Module with Current Input and Customer-Supplied Loop Power (refer to Table A) RIO Analog signals must be within the +0V common mode voltage range which is referenced to the analog system common (). If an input channel floats outside of this range, invalid input readings will result. Output User Analog Output Device + BLU CLR in0 in0 in in in2 in2 in3 in3 out0 out 30 SHD in V0 in I0 in V in I in V2 in I2 in V3 in I3 Vdc out0 out + V dc Supply + Current Input User Analog Input Device User V User ATTENTION: The 249 ohm input current shunt is rated at 0.25 Watts. Do not exceed this rating. 4

5 Figure 6 Wiring Connections for the Analog Block Module with Current Input and Block-Supplied Loop Power (refer to Table A) RIO Analog signals must be within the +0V common mode voltage range which is referenced to the analog system common (). If an input channel floats outside of this range, invalid input readings will result. Output User Analog Output Device + BLU CLR in0 in0 in in in2 in2 in3 in3 out0 out 30 SHD in V0 in I0 in V in I in V2 in I2 in V3 in I3 Vdc out0 out + V dc Supply i i Loop Powered Current Input User Analog Input Device V dc loop power supplied at terminal 25 on block. ATTENTION: The 249 ohm input current shunt is rated at 0.25 Watts. Do not exceed this rating. The block I/O module has an equipment grounding stud on the lower left side of the module. Connect this grounding stud to your equipment ground. Torque the nut to 5 in-lbs maximum when connecting to your equipment ground. ATTENTION: Do not overtighten the nut on the grounding stud when connecting the wire. Damage to the module could result. Refer to Programmable Controller Wiring and Grounding Guidelines (770-4.) for further information. 5

6 Table A Wiring Block Designations Connections Power Connections 79 NDC Designation Description Terminal No. V dc Power dc Return 3 Chassis ground 2 Transducer Power 2 V For current input only 25 Remote I/O BLU Blue wire RIO 6 Connections CLR Clear wire RIO 8 SHD Shield RIO 7 I/O Connections inv0 thru inv3 Voltage Input 0 through 3 9, 3, 7, 2 Voltage Input in0 thru in3 Input Return 0 through 3 0, 4, 8, 22 ini0 thru ini3 Current Input 0 through 3, 5, 9, 23 Current Input in0 thru in3 Input Return 0 through 3 0, 4, 8, 22 Input Ground in0 in3 Channels 0 3 ground 2, 6, 20, 24 3 Output out 0 out 0 Output 0 (+) 27 Return output 0 ( ) 26 4 out out Output (+) 29 Return output ( ) 28 4 Not used For internal test only; not for customer use. 4, 5, 30 Connect chassis ground to equipment grounding stud. These are not internally connected V dc (nominal 24V, 00mA) voltage source for accommodating loop-powered current transducer inputs. 3 Terminals 2, 6, 20 and 24 are internally connected. 4 Terminals 26 and 28 are internally connected. Table B Acceptable Wiring Cables for Connection Use Cable Type Remote I/O link Belden 9463 Input and output wiring Up to 4AWG (2mm 2 ) stranded with 3/64 inch insulation 6

7 Figure 7 Switch Settings 79 NDC ANALOG BLOCK Default Switch Settings = 0 SW2 8 Not used SW2 7 Not Used POWER COMM FAULT SW SW2 6 Last I/O Group 0 Not last rack Last rack SW2 5 Processor Restart/Lockout (PRL) 0 Processor Restart Processor Lockout 30 SW SW2 4 Hold Last State 0 Reset Outputs Hold Last State Open cover to access switches 0 2 SW2 3 Transfer Type 0 Block Transfer Discrete Transfer Position = 0 ATTENTION: Cycle power to the module after setting the switches. Position = End View of Switch Communication Rate SW2 2 SW2 Bits/s K K K K Starting Quarter SW 2 SW Module Group (st) 0 2 (2nd) 0 4 (3rd) 6 (4th) 7

8 747-SN 77-SN PLC 2 PLC 5 PLC 5/250 PLC 3 SW Switch Position Number Number Number Number Number Number Not Valid

9 747-SN 77-SN PLC 2 PLC 5 PLC 5/250 PLC 3 SW Switch Position Number Number Number Number Number Number Not Valid address 77 is an illegal configuration. PLC-5/ processors can scan rack 03. PLC-5/5 and PLC-5/20 processors can scan racks PLC-5/25 and PLC-5/30 processors can scan racks PLC-5/40 and PLC-5/40L processors can scan racks 0 7. PLC-5/60 and PLC-5/60L processors can scan racks PLC-5/250 processors can scan racks PLC-3 processors can scan racks The SLC 500 controllers communicate with the block I/O using an I/O Scanner module (cat. no. 747-SN series A). Refer to the user manual for the 747-SN/A Scanner module for more information. Note: This block I/O module is not compatible with the 747-DSN Distributed I/O Scanner module. 9

10 Termination Resistor A termination resistor must be installed on the last block in a series. Connect the resistor as shown in Figure 8. Figure 8 Installing the Termination Resistor Connect termination resistor across terminals 6 (BLU) and 8 (CLR). 50 ohm 57.6K and 5.2K baud 82 ohm 230.4K baud BLU CLR SHD Termination Resistor 0835 I ATTENTION: Devices that are operating at 230.4K baud must have 82 ohm terminators in place for proper operation. Indicators POWER COMM FAULT POWER Indication OFF ON No power Power okay Description COMM FAULT OFF ON Flashing OFF ON Flashing Communication not established Communication established Reset commands being received in Program mode Normal Error (hardware or software), block power low COMM FAIL remote I/O cable disconnected, 00ms between valid frames, no more than 255 valid frames between valid frames addressed to block, 20ms idle time exceeded. COMM and FAULT will alternately flash when processor restart lockout is selected, a fault has occurred and the processor is communicating with the block. 0

11 79-NDC Specifications Input Specifications Inputs per Block Type of Input Update Rate per Channel Input Impedance Absolute Accuracy Linearity Common Mode Rejection Normal Mode Rejection Output Specifications Outputs per Block 2 Output Current Range Output Impedance Internal Update Rate per Channel Drive Capability Short Circuit Protection Absolute Accuracy Linearity Overall Accuracy Drift V Loop Power Voltage Current Specifications continued on next page 4 Selectable +0V (4 bit) +5V (4 bit) 0 0V (4 bit) 0 5V (4 bit) 0 20mA (4 bit) +20mA (4 bit) 08ms Voltage: 0 megohm Current: 249 ohm 25 o C 25 o C 75db 50Hz 60Hz 0 20mA (3 bits) Greater than megohm 0ms 20mA into loads of K ohms or less Indefinite 25 o C 25 o C (over 4-20mA range) 75 ppm/ o C 20-28V dc unregulated 00mA

12 79-NDC Specifications General Specifications Number of Channels Resolution Input Band Width Input Output Overvoltage Protection Input Output ATTENTION: The 249 ohm input current shunt is rated at 0.25 Watts. Do not exceed this rating. External Power Voltage Current Dimensions Inches Millimeters Isolation Inputs to Outputs Power and chassis to I/O RIO and chassis to Power and I/O bits full scale inputs 3 bits full scale outputs 5Hz 40V ac 40V ac V dc 600mA 6.95H X 2.7W X 3.85D 76.5H X 68.8W X 98D 500V ac 500V ac 500V ac Power Dissipation Maximum.52 Watts Thermal Dissipation Maximum BTU/hr Environmental Conditions Operational Temperature Storage Temperature Relative Humidity Conductors Wire Size Category 0 to 60 o C (32 to 40 o F) 40 to 85 o C ( 40 to 85 o F) 5 to 95% noncondensing 4 gauge (2mm 2 ) stranded maximum 3/64 inch insulation maximum 2 You use this conductor category information for planning conductor routing as described in the system level installation manual. With offices in major cities worldwide WORLD HEADQUARTERS Allen-Bradley 20 South Second Street Milwaukee, WI USA Tel: (44) Telex: FAX: (44) Publication July 994 Supersedes publication February PN Copyright 994 Allen-Bradley Company, Inc. Printed in USA