24 Input/8 Output AC Block I/O Module

Transcription

1 4 Input/8 Output AC Module Cat. No. 79-4A8 Series B Installation Mount the block I/O module in a vertical (recommended) or horizontal position. Allow sufficient room around the block for cooling air to flow through the block module. Refer to Figure. Figure Mounting Dimensions for the Module Cat. No. 79 4A8 (PLC version shown) 0.5 (.7) 4.5 (0.5).5 (85.) Inches (Millimeters) 79-4A8 0V ac IN/OUT IN G (76.5) 6.60 (67.6) M STATUS IN IN OUT G G+ G Block 0 IN G+ RACK # OUT G (50.8) air gap on all 4 sides. Operating temperature in air gap below module must not exceed 60 o C (40 o F). mounting holes for /4 inch screws Equipment Grounding Stud CAUTION: When tightening grounding stud nut, do not exceed 5 in-lbs. Dimensions 6.95H x 4.5W x.85d (76.5H x 0.5W x 98D)

2 Cat. No. 79-4A8 Series B Figure Mounting on a DIN Rail DIN Rail A-B Pt. No. 99-DR EN 50 (5 x 7.5mm). Hook top of slot over DIN rail.. While pressing block against rail, pull down on locking levers.. When block is flush against rail, push up on locking levers to secure block to rail. Locking levers Figure Inserting Labels A set of die-cut labels is supplied with your module. Select the proper module designation labels (PLC or SLC) for the front door and terminal strips.. Remove labels from package. Select correct labels for your application. (PLC label is numbered and 0 7. SLC is numbered and 08 5.). Remove plastic cover on terminal strip by flexing in middle. Slip the terminal designation label with power and RIO designations into built-in holders in left terminal strip cover. Flex cover slightly to install. Repeat for the other terminal strip using the remaining label.. Open clear front door. Insert module designation label into slots in door.

3 Cat. No. 79-4A8 Series B Table A Acceptable Wiring Cables for Connection Use Cable Type Remote I/O link Belden 946 Input and output wiring Up to 4AWG (mm ) stranded with /64 inch insulation Connect wiring as shown in Figure 4 or Figure 5. Figure 4 Wiring Connections with PLC Family Programmable Controllers (refer to Table B) PLC RIO L/N L L L/N NO L 9 GND NO N NO BLU NO SHD NO CLR L 4 L/N L 4 L 4 in 0 out in in in out 0 L/N in 0 in 0 in out in in in out in in in 4 L out in L in in 5 out in in in 6 out in in 9 in 7 out in in L L/N E: connections are internally connected together. connections are internally connected together. connections are internally connected together. L 4 connections must be externally connected together to accommodate total amperage. Output fusing is recommended. Refer to Table C.

4 Cat. No. 79-4A8 Series B Figure 5 Wiring Connections with SLC Family Processors (refer to Table B) SLC L L/N L/N L RIO GND BLU CLR in in 0 in in in in in in L N SHD in 08 in 09 in 0 in in in in 4 9 in 5 L/N L L/N L 9 NO NO NO NO NO L 4 L 4 L 4 out in out 0 in 0 out in out in out in out in out in out in L L/N E: connections are internally connected together. connections are internally connected together. connections are internally connected together. L 4 connections must be externally connected together to accommodate total amperage. Output fusing is recommended. Refer to Table C. 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. 4

5 Cat. No. 79-4A8 Series B Table B Wiring Block Designations Connections 79 4A8 Series B Connector/Terminal Designation Description Left Conn. Right Conn. Power L ac hot Connections N ac neutral GND Chassis ground Remote I/O BLU Blue wire RIO 6 Connections CLR Clear wire RIO 8 SHD Shield RIO 7 I/O Connections in thru in Input thru 6, 8, 0,, 4, 6, 8, Input L/N Input Common 0,, 4 (G) 6 L/N Input Common 9,, PLC: in 0 thru in 7 SLC: in 08 thru in 5 PLC: Input 0 thru 7 SLC: Input 08 thru 5 5, 7, 9,,, 5, 7, 9 Input in thru in Input thru 5,,, 9, 7, 5,, (G + ) 7 L/N Input Common, 9, 7 4 L 4 Output Supply, 0, 8 5 Output (G) 8 PLC: out thru out PLC: Output thru 6, 4,, SLC: out thru out SLC: Output thru 0, 8, 6, 4, Not used For internal test only; 4, 5 9, 7, 6 not for customer use. No Conn No internal connection; customer can use. Connect chassis ground to equipment grounding stud. These are not internally connected. Left connector terminals 0, and 4 are internally connected together. Left connector terminals 9, and are internally connected together. 4 Right connector terminals, 9 and 7 are internally connected together. 5 Right connector terminals, 0 and 8 must be externally connected to accommodate total amperage. 6 (IN G) = input module group ( word). 7 IN (G+) = input module group plus word. 8 OUT (G) = output module group ( word)., 8, 5, 4, 5

6 Cat. No. 79-4A8 Series B Figure 6 Switch Settings Default Switch Settings = 0 SW 8 Not used SW 7 Not Used SW 4 5 SW 6 Last I/O Group (PLC- only) 0 Not last rack Last rack Open cover to access switches SW SW 5 Processor Restart/Lockout (PRL) 0 Processor Restart Processor Lockout SW 4 Hold Last State 0 Reset Outputs Hold Last State 0 SW Set to 0 Position = 0 End View ATTENTION: Cycle power to the module after setting the switches. Position = Communication Rate SW SW Bits/s K 0 5. K 0.4 K.4 K Starting Quarter SW SW Module Group (st) 0 (nd) 0 4 (rd) 6 (4th) 6

7 Cat. No. 79-4A8 Series B 747-SN 77-SN PLC PLC 5 PLC 5/50 PLC SW Switch Position Number Number Number Number Number Number Not Valid

8 Cat. No. 79-4A8 Series B 747-SN 77-SN PLC PLC 5 PLC 5/50 PLC SW Switch Position Number Number Number Number Number Number Not Valid address 77 is an illegal configuration. PLC-5/ processors can scan rack. PLC-5/5 and PLC-5/0 processors can scan racks 0. PLC-5/5 and PLC-5/ processors can scan racks 0. PLC-5/40 and PLC-5/40L processors can scan racks 0 7. PLC-5/60 and PLC-5/60L processors can scan racks 0 7. PLC-5/50 processors can scan racks 7. The SLC 5 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. Important: This block I/O module is not compatible with the 747-DSN Distributed I/O Scanner module. 8

9 Termination Resistor Installation Instructions Cat. No. 79-4A8 Series B A termination resistor must be installed on the last block in a series. Connect the resistor as shown in Figure 7. Figure 7 Installing the Termination Resistor Connect termination resistor across terminals 6 (BLU) and 8 (CLR). 50 ohm 57.6K and 5.K baud 8 ohm.4k baud Termination Resistor BLU CLR SHD 085 I ATTENTION: Devices that are operating at.4k baud must have 8 ohm terminators in place for proper operation. Indicators PLC M STATUS IN IN OUT G G+ G SLC M STATUS IN G IN G+ 0 OUT G 0 M STATUS Indicator OFF ON Flashing OFF ON Flashing Description Communication not established Communication established Processor in Program mode Normal Error (hardware or software), block power low M FAIL communication cable disconnected, ms between valid frames, no more than 55 valid frames between valid frames addressed to block, 0ms idle time exceeded. M and STATUS will alternately flash when processor restart lockout is selected, a fault has occurred and the processor is communicating with the block. 9

10 Cat. No. 79-4A8 Series B Fusing The block I/O module is internally fused to protect the module. No external power fusing is required. The outputs of the block I/O modules are not fused. Fusing of outputs is recommended. If desired to fuse an output, you must provide external fusing. Table C Recommended Fuses Type of Circuit ac Part Number Size Rating in Amps Maximum Surge Current (repeatable every s) SAN-O SS in. x.5 in..0a.0a for 50ms SAN-O MQ-.0 5mm x 0mm.0A.5A for 50ms Note: Do not substitute another fuse for those listed. The recommended fuses will withstand surges of the above listed currents for the time specified.. modules are derated linearly above o C up to and including 60 o C. Table D Output Ratings and Non-fused Surge Currents Catalog Number Voltage Mounting Max. Output o 60 o C Maximum Surge Current (repeatable every s) 0V ac Vertical 6mA 0mA 79-4A8/B 0V ac Horizontal 0mA 50mA These surge ratings are for non fused outputs only. 0A for 50ms 0

11 Cat. No. 79-4A8 Series B 79-4A8 Specifications Input Specifications Inputs per Block 4 ( groups of 8) Nominal Input Current Nominal Input Voltage On-state Voltage Range ma Off-state Voltage Maximum 5V On-state Current Minimum Maximum 0V ac 79 V ac, 47 6Hz 79V, V, 60Hz Off-state Current Minimum.mA (60Hz) Input Impedance Maximum 5K 60Hz Input Signal Delay Off to on On to off Output Specifications Outputs per Block 8 ( group of 8) Output Voltage Range Output Current Rating Surge Current Minimum On-state Current Maximum On-state Voltage Drop Vertical Mtg. Horizontal Mtg. Off-state Leakage Current (maximum) Output Signal Delay Off to on On to off Specifications continued on next page.0ms 6ms (maximum) (allows for / cycle drop-out) 0 V ac 60 o C, o C 60 o C, o C 0A for 50ms each, repeatable every sec. 50mA per output.5v 0mA 50Hz 60Hz; 50Hz

12 Cat. No. 79-4A8 Series B General Specifications External Power (internally protected - no external fuse required) Voltage Current Dimensions Inches Millimeters Isolation Power supply to RIO I/O Group-to-Group I/O Group-to-Logic Power Dissipation Maximum 8.76 Watts 85 V ac, 47 6Hz 50mA 6.95H X 4.5W X.85D 76.5H X 0.5W X 98D 5V ac 50V ac 50V ac Thermal Dissipation Maximum 6.97 BTU/hr Environmental Conditions Operational Temperature Storage Temperature Relative Humidity Conductors Wire Size Category 0 to 60 o C ( to 40 o F) 40 to 85 o C ( 40 to 85 o F) 5 to 95% noncondensing 4 gauge stranded maximum /64 inch insulation maximum 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 0 South Second Street Milwaukee, WI 5 USA Tel: (44) 8-0 Telex: 4 FAX: (44) Publication March 994 Supersedes publication April 99 PN Copyright 994 Allen-Bradley Company, Inc. Printed in USA