Rockwell Automation 1746-XXXX SLC 500 Digital I/O Modules Installation Instructions - Manual (Page 40)

40 SLC 500 Digital I/O Modules
Publication 1746-IN027D-EN-P - December 2012
ATTENTION: A transient pulse occurs in transistor outputs when the external DC supply
voltage is applied to the output common terminals (for example, via the master control relay).
This can occur regardless of the processor having power or not. For most applications, the
energy of this pulse is not sufficient to energize the load.
Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011 , for more
information on transient pulses and guidelines to reduce inadvertent processor operation.
Specifications – 1746-OV8, 1746-OV16, and 1746-OVP16
Attribute Value
1746-OV8 1746-OV16
(4)
(4)
Removable terminal block.
1746-OVP16
(4)(5)(6)(7)
(5)
A fused common and blown fuse LED indicator are provided on this module. See Fuse Protection and Blown Fuse Diagnostics.
(6) Use the following ID Code when configuring your system with programming software or the HHT: 1746-OVP16 = 2922.
(7) Certified for Class 1, Division 2 hazardous location by CSA.
Voltage category 24V DC Signal Output
Number of outputs 8 16 16
Points per common 8 16 16
Voltage, operating (V DC) 10...50 (sink) 20.4...26.4 (sink)
Backplane current
consumption 5V DC 0.135 A 0.270 A 0.250 A
24V DC 0.0 A
Signal delay, max resistive load On = 0.1 ms
Off = 1.0 ms On = 0.1 ms
(8)
Off = 1.0 ms
Off-state leakage, max
(1)
(1)
To limit the effects of leakage current through solid state outputs, a loading resistor can be connected in parallel with your load. For transistor
outputs, 24V DC operation, use a 5.6 K
Ω, 1/2 W resistor.
1 mA
Load current, min 1 mA
Continuous current per point
(2)
(2)
Recommended surge suppression: For transistor outputs when switching 24V dc inductive loads, use a 1N4004 diode reverse-wired across the
load (also see footnote 9). Refer to the SLC 500 Modular Hardware Style User Manual, publication
1747-UM011 , for more information on surge
suppression.
1.0 A @ 30 °C (86 °F)
0.50 A @ 60 °C (140 °F) 0.50 A @ 30 °C (86 °F)
0.25 A @ 60 °C (140 °F) 1.5 A @ 30 °C (86 °F)
(9)
1.0 A @ 60 °C (140 °F)
Continuous current per module 8.0 A @ 30 °C (86 °F)
4.0 A @ 60 °C (140 °F) 6.4 A @
0...60 °C (32...140 °F)
On-state voltage drop, max 1.2V @ 1.0 A 1.2V @ 0.5 A 1.0V @ 1.0 A
Surge current per point
(3)
(3)
Repeatability is once every 1 s at 30 °C (86 °F). Repeatability is once every 2 s at 60 °C (140 °F).
3.0 A for 10 ms 4.0 A for 10 ms
(10)