Brand: Bently Nevada Description: 125712-01 Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 14 Payment Term: T/T Shipping Port: Shenzhen Bently Nevada 125712-01 Provides isolated Form C relay outputs for alarm and trip signaling in 3500 Series machinery-monitoring racks
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Manufacture |
Bently Nevada |
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Model Number |
125712-01 |
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Ordering Number |
125712-01 |
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Catalog |
3500/32 |
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Description |
4-Channel Relay Module |
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Country Of Origin |
USA |
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HS CODE |
85389091 |
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Dimension |
24*2.4*16 (CM) |
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Weight |
1.4 kg |
Ordering Information
3500 4-Channel Relay Module
3500/32 -AXX-BXX
A: Output Module 0 1 4-Channel Relay I/O Module
B: Agency Approval Option 0 0 None 0 1 CSA/NRTL/C
Spares
125712-01 Spare 4-Channel Relay Module
125720-01 Spare 4-Channel Relay I/O Module
04425545 Grounding Wrist Strap (single use)
132319-01 Firmware IC
04400037 IC Removal Tool
00580436 Connector Header, Internal Termination, 6-position, Green
129771-01 4-Channel Relay Module Manual
Technical Parameters
Relay Channels: 4 independent Form C (SPDT) relays of the Bently Nevada 125712-01
Contact Ratings:
5 A at 250 VAC (resistive load)
5 A at 30 VDC (resistive load)
Coil Drive: Solid-state drive from 3500 backplane logic; no external coil power required in Bently Nevada 125712-01
Response Time: ≤ 10 ms from bus command to contact change
Isolation: 1 kV coil-to-contact and contact-to-contact dielectric withstand
Status Indicators: Front-panel LEDs per channel for output-on and fault condition
Backplane Interface: Dual 50-pin connectors to 3500 Series rack data bus
Operating Environment:
Temp: 0 °C to +70 °C
Humidity: up to 95 % RH, non-condensing
Product function
Alarm/Trip Signaling: Receives fault or alarm commands over the 3500 digital bus and actuates corresponding relay contacts to external circuits via Bently Nevada 125712-01.
Diagnostic Feedback: Monitors relay coil and contact health; reports stuck-coil or contact-weld conditions back to the system interface.
Redundancy Support: In multi-module configurations, channels can be paralleled or cross-wired for fail-safe relay voting schemes.
Application Areas
Turbine Overspeed Protection: Driving turbine-trip solenoids on overspeed fault detection.
Compressor Surge/Trip: Initiating compressor shutdown upon surge or stall conditions.
Generator Protection: Activating breaker-open relays on ground-fault or loss-of-excitation alarms.
Auxiliary Alarm Panels: Driving local lamp and horn circuits for plant-wide annunciation of machinery faults.
Safety Interlocks: Integrating with SIL-rated interlock chains for emergency shut-off of process equipment.
