Manual
Publication 1794-IN122A-EN-P - June 2008 4 PN-25969
Copyright © 2008 Rockwell Automation, Inc. All rights reserved.
Specifications - 1794-OV32 Flex I/O Digital Sinking Output Module
Specification Description
Number of I/O channels 32 (2 groups of 16), nonisolated within groups, sinking
Module location Cat. No. 1794-TB32, -TB32S
On-state voltage 10V dc minimum
24V dc nominal
31.2V dc maximum
Output current rating 14A maximum per module
6A total for channels 0...15
8A total for channels 16...31
Off-state voltage 31.2V dc maximum
On-state current 1.0mA minimum per channel
500mA maximum per channel
Surge current 2A for 50ms, repeatable every 2s
Off-state leakage 0.5mA maximum
On-state voltage drop 0.2V dc maximum
Isolation voltage 50V (continuous), Basic Insulation Type
Type tested at 707V dc for 60 s, between field side and system
No isolation between individual channels
Output signal delay
(1)
Off to On - 0.5ms maximum
On to Off - 1.0ms maximum
Flexbus current 110mA
Power dissipation 4.4W @ 31.2Vdc
Thermal dissipation 8.53 BTU/hr maximum @ 31.2V dc
Indicators (field side indication,
customer device driven)
32 yellow status indicators
Pilot Duty Rating DC13
Fusing Module outputs are not fused. Fusing is recommended. If fusing is desired,
you must provide external fusing. Use SAN-O MQ4-800 800mA fuses.
(1)
The time from the receipt of an on or off command to the output actually turning on or off.
General Specifications 1794-IV32, 1794-OV32
Specification Description
Terminal base screw torque Determined by installed terminal base
Dimensions (with module installed)
H x W x D
94 x 94 x 69 mm
3.7 x 3.7 x 2.7 inches
External dc power supply voltage 24V dc nominal
Voltage range 1794-IV32 - 19.2...31.2Vdc (including 5% ac ripple)
1794-OV32 - 10.0...31.2Vdc (including 5% ac ripple)
Supply current 1794-OV32 -50mA @ 24V dc
North American temp code T4A
Keyswitch position 2
Enclosure type rating None (open-style)
Wire size Determined by installed terminal base
Wiring category
(1)
2- on signal ports
(1)
Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1
.
Environmental Specifications
Specification Description
Operating temperature IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
0...55 °C (32...131 °F)
Storage temperature IEC 60068-2-1 (Test Ab, Unpackaged Non-operating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Non-operating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Non-operating Thermal Shock):
-40...85 °C (-40...185 °F)
Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):
5...95% non-condensing
Vibration IEC60068-2-6 (Test Fc, Operating):
5g @ 10...500Hz
Shock IEC60068-2-27 (Test Ea, Unpackaged shock):
Operating 30g
Non-operating 50g
Emissions CISPR 11:
Group 1, Class A (with appropriate enclosure)
ESD immunity IEC 61000-4-2:
6kV contact discharges
8kV air discharges
Radiated RF immunity IEC 61000-4-3:
10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz
10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz
10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz
1V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz
EFT/B immunity IEC 61000-4-4:
±2k V at 5kHz on signal ports
Surge transient immunity IEC 61000-4-5:
±1 kV line-line(DM) and ±2 kV line-earth(CM) on signal ports
Conducted RF immunity IEC 61000-4-6:
10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
Certifications
Certifications (when product is marked)
(1)
c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada.
See UL File E65584.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations,
certified for U.S. and Canada. See UL File E194810.
CE European Union 2004/108/EC EMC Directive, compliant with:
EN 61326; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
C-Tick Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
(1)
See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification
details.