Rockwell Automation 1769-OB32T Compact 32-point Solid-state 24V dc Source Output Module - Manual (Page 13)

Compact 32-point Solid-state 24V dc Source Output Module 13
Publication 1769-IN080A-EN-P - August 2006
Option 2 - Use Allen-Bradley 1492 Wiring Systems
Allen-Bradley 1492 wiring systems are available for connecting 32-point I/O
modules to external I/O. These wiring systems include a pre-wired cable available
in four lengths: 0.5 m (1.6 ft), 1.0 m (3.3 ft), 2.5 m (8.2 ft), 5.0 m (16.4 ft). An
interface module for connecting external devices is also available. Cables are
equipped with keyed connectors at both ends for proper connections. Interface
modules are DIN-rail mountable and available with or without field-side status
indicating LED indicators. Stick-on labels are provided with the interface modules
to identify I/O-wiring termination points.
(1) To maintain group isolation provided by 32-point I/O modules, use a 1492 terminal block that provides group isolation.
Consult 1492 documentation or your Allen-Bradley Sales Office for additional information.
(2) Maximum cable length is dependent on how much voltage drop (current x (ohms/ft) x (ft)) your system can tolerate. Your
system should take into account the minimum turn-on voltage required by external loads connected to the 32-point output
module, the minimum turn-on voltage required by the 32-point input module, and all of the voltage drops associated with
wiring to and from the load, sensors, terminal blocks, power sources and the module itself. See the table on page 13 for
voltage drop values for the 1492 cables shown above.
(3) When using 1492-CABLExx, you won’t be able to close the I/O module door. Leave it open or detach the removable door.
Voltage Drop
Cat. No. Voltage Drop at 30
°C
Voltage Drop at 60
°C
Series C cables V dc/dc com
wires (1)
(1) Voltage drop at max rated current of 2 A per conductor.
Output channel
wires (2)
(2) Voltage drop at max rated current of 0.5 A per output channel.
V dc/dc com wires Output channel
wires
1492-CABLE005H 127 mV 34 mV 144 mV 38 mV
1492-CABLE010H 173 mV 45 mV 196 mV 51 mV
1492-CABLE025H 334 mV 83 mV 388 mV 95 mV
1492-CABLE050H 574 mV 147 mV 686 mV 169 mV
31562-M
32-point I/O Module
Male
MIL-C-83503
Header
1492-CABLExx (2)(3)
Connects 32-point Module
to DIN-rail Mountable
Terminal Block
8 mm (0.32 in.) REF.
1492-IFM40xx DIN-rail Mountable Terminal Block (1)
0.2 to 4 mm 2
(24 to 12 AWG)