Description
Bently Nevada 130730-01 Signal/Input Relay Card
The Bently Nevada 130730-01, also cataloged as the 130730 signal/input relay card, serves as the primary signal conditioning and relay execution module utilized to execute alarm, warning, and trip logic across 3500 Machinery Protection System platforms. It converts multi-source analog and pulse inputs into deterministic relay outputs through internal rack-based processing.
Suffix Breakdown & Model Matrix
Hardware Specifications
| Parameter |
Specification |
| Model |
130730-01 |
| Brand |
Bently Nevada |
| Origin |
USA |
| Weight |
0.45 kg |
| Dimensions |
150 mm × 100 mm × 50 mm |
| Operating Temp |
–40 deg C to +85 deg C |
| Power Consumption |
24 VDC |
| Input Channels |
Up to 8 channels |
| Output Channels |
4 relay outputs |
| Input Voltage Range |
0.5 V to 10 V rms |
| Input Current Range |
4 mA to 20 mA |
| Relay Contact Rating |
2 A at 30 VDC |
| Communication Interface |
Dual Ethernet, RS-485 |
| Storage Temperature |
–40 deg C to +85 deg C |
| Humidity |
5%–95% non-condensing |
Signal Conditioning and Relay Execution Behavior
The module performs analog-to-logic conversion through internal signal scaling and threshold evaluation. Input channels support mixed acquisition of vibration, Keyphasor, and process variables, with deterministic routing into relay decision blocks.
Cross-channel isolation architecture minimizes electrical coupling between input groups and relay outputs. This reduces false triggering under high EMI conditions typically present in rack-mounted TSI environments.
Relay actuation is driven by internal logic evaluation cycles synchronized with 3500 rack bus timing. Output contact switching is limited by 2 A at 30 VDC rating envelope, ensuring controlled interface to external shutdown and alarm circuits.
Frequently Asked Questions (FAQ)
Q: Can the 130730-01 be hot-swapped in a running 3500 rack?
A: Yes. The module supports hot-swap within 3500 rack insertion sequencing, provided system state is stable.
Q: Do all input channels share the same reference ground?
A: No. Input channels are electrically isolated to reduce cross-channel interference and ground loop effects.
Q: Can relay outputs be paralleled for higher load capacity?
A: No. Relay contacts must operate within the rated 2 A at 30 VDC limit without external paralleling.
Field Installation Guidelines
Insert the module only into a validated 3500 rack slot with confirmed backplane alignment. Ensure full connector seating to maintain stable signal and power distribution.
Route input wiring (4-20 mA and voltage signals) separately from relay output wiring to reduce induced coupling. Maintain shield continuity and terminate shields at designated single-point ground locations.
Verify correct configuration mapping for Keyphasor, vibration, and process channels prior to energization. Confirm relay state logic response during commissioning test cycles before enabling automatic trip functions.
