PLC 1771-OBD 16-Point 10-60 VDC Output Module
1771-OBD
16-Point DC Output Module · 10-60 VDC Source Output Module
Lifecycle note: Use the unit nameplate and current official documentation as final references before approving a replacement.
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+86 1535940827516-Point DC Output Module · 1771 Chassis I/O Platform
1771-OBD is a 16-point source output module for switching 10 to 60 VDC field loads in a Series B 1771 I/O chassis.
The official product data specifies 2 A maximum per output, 8 A maximum per module, a 4 A per-point surge for 10 ms, and a maximum 1 ms switching delay. Backplane demand is 400 mA at 5 VDC.
Replacement must preserve chassis keying, wiring-arm assignment, field-supply polarity, group and module current limits, fuse arrangement and output addressing. Verify that the installed hardware is the documented Series C configuration.
| Manufacturer | PLC |
|---|---|
| Model | 1771-OBD |
| Product type | 10-60 VDC Source Output Module |
| System family | 1771 Chassis I/O Platform |
| Catalog number | 1771-OBD Series C |
| Outputs | 16 |
| Chassis | Series B 1771 I/O chassis |
| Output voltage range | 10 to 60 VDC |
| Minimum output current | 2.5 mA per output |
| Maximum output current | 2 A per output / 8 A per module |
| Surge current | 4 A per output for 10 ms, every 2 s |
| Off-state leakage | 0.5 mA maximum per output at 24 VDC, 25 °C |
| On-state voltage drop | 0.3 V maximum at 2 A |
| Output delay | 1.0 ms on or off |
| Backplane current | 400 mA at 5 VDC ±5% |
| Isolation voltage | 1500 VAC rms |
| Operating temperature | 0 to 60 °C |
| Storage temperature | -40 to 85 °C |
| Relative humidity | 5 to 95%, noncondensing |
| Field wiring arm | 1771-WH standard |
1771-OBD is a 16-point source output module that switches 10 to 60 VDC field loads in a compatible Series B 1771 I/O chassis.
1771-OBD supports up to 2 A per output and 8 A per module, with a 4 A per-point surge for 10 ms every 2 seconds; load inrush must comply.
1771-OBD normally uses the 1771-WH field wiring arm, so terminal assignment, arm condition, chassis keying and field-supply polarity must match the installation.
The documented 1771-OBD specifications apply to Series C hardware in a Series B chassis, making the exact series and chassis configuration essential for replacement acceptance.
Before replacing 1771-OBD, verify output addressing, fuse arrangement, group and module current, load inrush, wiring-arm assignment, chassis keying and 400 mA backplane demand.
A 1771-OBD request should include catalog and series, quantity, chassis series, wiring-arm catalog, field voltage, load currents, fuse arrangement and nameplate and wiring photographs.
Send the complete 1771-OBD catalog number, revision, quantity, destination and nameplate photo. Identification details will be checked before availability and lead time are confirmed.
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