1746-OB32 - In Stock | Allen Bradley PLC SLC 500 Discrete Input and
Output Modules
About 1746-OB32
The 1746-OB32 is a 32 Channel Digital Output Module by AB. It is a
high density low current DC output module, compatible to be fitted
in any available slot of 1746 Chassis except slot 0. The voltage
output it provides is 24V DC. The 1746-OB32 has 32 outputs with 16
points per common and it has a sourcing operational voltage ranging
between 5 and 50V DC. The 1746-OB32 module draws 0.19A of backplane
current at 5V DC and it provides an output circuit isolation tested
at 1500V AC for 1 minute. It has a maximum signal delay time of
0.1ms in ON and 1ms in OFF mode and the maximum circuit current
leakage in the OFF state is 1mA.
The 1746-OB32 has 0.25A at 0-60 Deg. Celsius nominal current on
each output point and the minimum current load of 1mA for every
output channel. The module has an average 8A nominal current and a
2A current per common. The maximum voltage loss in the circuit in
the ON state is 1.2V at 0.5A and it has a surge of 1.0A for 1ms
repeatable every 2s across each output point, a power dissipation
of 0.172W per point, and a total module heat dissipation of 6.45W.
The 1746-OB32’s operating temperature ranges between 0 and 60 deg. Celsius (32 and
140 deg. Fahrenheit) at 5-95% non-condensing humidity and it can
withstand an operating shock and vibration of 30G and 2.5G
respectively at 10-200Hz. It has a C-UL and UL Listed Industrial
Control Equipment for Class I, Division 2, Groups A, B, C, D
Hazardous Locations certification, and is rated at the NEMA
standard ICS 2-230 Noise immunity.
The 1746-OB32 is a Thirty-Two (32) channel Discrete Input module
that is manufactured by AB for the SLC 500 controller platform.
Technical Specifications for 1746-OB32
| Manufacturer | Rockwell Automation |
| Brand | AB |
| Part Number/Catalog No. | 1746-OB32 |
| Series | SLC 500 |
| Module Type | Digital DC Output Module |
| Outputs | 32 |
| Voltage Range | 5-50 Volts DC |
| Current/Output | 0.5-0.25 amps |
| No. of Outputs | Thirty-Two (32) |
| Current/Module | 8 amps |
| Point Per common | Sixteen (16) |
| Backplane Current (5 Volts) | 190 milliamps |
| Nominal output | 24VDC |
| Applications | High Current |
| Applications | High Current |
| Backplane Current | (5 Volts)190 mA |
| Step Response | 60 milliseconds in, 2.5 milliseconds out |
| Signal Delay, ON | 0.1 ms |
| UPC | 10662468092903 |
| Signal Delay, OFF | 1.0 ms |
| UNSPSC | 32151705 |
| Electronic Protection | No |
This module is primarily intended for energizing or actuating
discrete devices such as Pilot Lamps, Buzzers, Horn, Siren and
actuating devices such as solenoid, motors and other devices. The
output voltage of this module is 24VDC which may be wired directly
to the mentioned devices provided they are within the operating
voltage range of 5-30VDC. If, output devices are not compatible
with the DC output, specifically if it operates with an AC voltage,
this module may still be used by implementing interposing function.
With interposing, a relay with a 24VDC coil is the load connected
to this module. The Normally Open (N.O) or Normally Closed (N.C.)
contacts are connected to the AC voltage. In old wired systems
where electrical noises are present, interposing may also be used
as external module isolation. This protects the module from
external damage or unwanted behavior due to poor grounding and
wiring of old systems due to undocumented repairs and modification.
This module ships with a Removable Terminal Block (RTB), Octal Door
label, a 32 LED light dedicated for each channel and a color-coded
module bar where the part number is displayed. AN AB made 1746-N3
or 1492 wiring systems. These connector or wiring systems are
compatible for this module to ensure proper termination and
adequate wire size in used This also prevents improper wiring as it
is pre-assembled and ensures that the module door is capable of
covering the terminal wirings. Other wires may also be used
however, large wire sizes will over occupy the front panel which
will make it difficult to perform troubleshooting even, close the
module door.
Technical Description of 1746-OB32
The AB 1746-OB32 is a SLC 500 Digital DC Output Module. This
Digital DC Output Module has a Voltage Range of 5-50 Volts DC and
32 Outputs. It has a Backplane Current (5 Volts) of 190 milliamps.
Reviews for 1746-OB32
I/O Rating
"The highest number of outputs available for this type of module. "
-DO Supply Tech
Voltage Range
"Typical operating range for most modules. This style shouldn't
take any major modifications. " -DO Supply Tech
Fused
"This module is not protected by a fuse that is in line with the
power source. " -DO Supply Tech
Product Review
"The 1746-OB32 is a High-Density Thirty-Two (32) channel output
module. It has much higher number of output channels compared to
1746-OB16 which only has Eight. High-Density modules such as
1746-OB32 however, requires use of wiring connectors or optionally
be used with 1492 wiring systems. These are pre-assembled wires to
ensure fast and safe signal terminal. 1746-OB16 may also be used
with the 1492 wiring system however, modifications must be done. "
-DO Supply Tech
Other models
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AB 1336-BDB-SP49D
AB 1336-PB-SP11A
AB 1794-ASB
AB 1756-EN2TXT
AB 1756-PA72
AB 1769-L32E
AB 1746-OB16
AB 1746-OB16E
AB 1746-OB32
AB 1746-OB32E
AB 1746-OB8
AB 1746-OBP16
AB 1746-OG16
AB 1746-OV16
AB 1746-OV32
AB 1746-OW16
AB 1746-OW16/C
AB 1746-OW16/C/D
AB 1746-OW4
AB 1746-OW8
AB 1746-OX8
AB 1746-P1
AB 1746-P2
AB 1746-P2/C
AB 1746-P3
AB 1746-P4
AB 1746-P5
AB 1746-P6
AB 1746-P7
AB 1746SC-NI8U
AB 1746SC-OAP8I
AB 1747-ACN15
AB 1747-ACNR15
AB 1747-ACNR15/A
AB 1747-ASB
AB 1747-ASB/A
AB 1747-BA
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