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Summary of Contents for Allen-Bradley 1791-16BC
- Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
- Page 2 16 Input/16 Output DC Block I/O Module Cat. No. 1791-16BC 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 1.
- Page 3 Installation Instructions Block I/O Cat. No. 1791-16BC Series B Figure 2 Mounting on a DIN Rail DIN Rail A-B Pt. No. 199-DR1 46277-3 EN 50022 (35 x 7.5mm) 1. Hook top of slot over DIN rail. 2. While pressing block against rail, pull down on locking levers.
- Page 4 Installation Instructions Block I/O Cat. No. 1791-16BC Series B Table A Acceptable Wiring Cables for Block I/O Connection Cable Type Remote I/O link Belden 9463 Input and output wiring Up to 14AWG (2mm ) stranded with 3/64 inch insulation Connect wiring as shown in Figure 4 or Figure 5.
- Page 5 Installation Instructions Block I/O Cat. No. 1791-16BC Series B Figure 5 Wiring Connections with SLC Family Processors (refer to Table B) – 24V dc CONN USED CONN USED USED USED USED CONN CONN CONN USED – USED 24V dc –...
- Page 6 Installation Instructions Block I/O Cat. No. 1791-16BC Series B Table B Wiring Block Designations 1791–16BC Series B Connector/Terminal Connections Connections Designation Description Left Right +24V dc Power Power RET +24 dc Return Connections Connections Chassis ground Blue wire – RIO...
- Page 7 Installation Instructions Block I/O Cat. No. 1791-16BC Series B Figure 6 Switch Settings Default Switch Settings = 0 SW2–8 Not used Filter Speed Select SW2–7 (Inputs only) Slow Fast Last I/O Group SW2–6 (PLC-2 only) Not last rack Last rack Processor SW2–5...
- Page 8 Installation Instructions Block I/O Cat. No. 1791-16BC Series B 1747-SN 1771-SN PLC–2 PLC–5 PLC–5/250 PLC–3 SW1 Switch Position Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Number Number Number Number Number Number Rack 0 Rack 1...
- Page 9 Installation Instructions Block I/O Cat. No. 1791-16BC Series B 1747-SN 1747-SN 1771-SN 1771-SN PLC–2 PLC–2 PLC–5 PLC–5 PLC–5/250 PLC–5/250 PLC–3 PLC–3 SW1 Switch Position Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Rack Number Number Number Number...
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Page 10: Termination Resistor
Installation Instructions Block I/O Cat. No. 1791-16BC Series B Termination Resistor 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). - Page 11 Installation Instructions Block I/O Cat. No. 1791-16BC 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.
- Page 12 Installation Instructions Block I/O Cat. No. 1791-16BC Series B 1791-16BC Specifications Input Specifications Inputs per Block 16 – 2 groups of 8 On-state Voltage Range 10–30V dc On-state Current Maximum 11.0mA @ 30V Minimum 2.5mA @ 10V Off-state Voltage Maximum...
- Page 13 With offices in major cities worldwide Publication 1791-2.20 – March 1994 PN 955117–44 Supersedes publication 1791-2.20 – April 1993 Copyright 1994 Allen-Bradley Company, Inc. Printed in USA Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 14 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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