Product Details
The 3500/25-01-04-01 is a 2-channel Keyphasor module manufactured by Bently Nevada for the 3500 Machinery Protection System. Functioning as a single half-height card assembly, it accepts phase reference and speed signals from proximity probes or magnetic pickups and conditions them into digital timing pulses across the rack backplane. This model is configured with a single 2-channel card, an isolated internal termination I/O module, and cNRTLus Class 1, Division 2 hazardous area approval.
Isolated I/O Interface and System Compatibility
The -04 I/O option features an isolated internal termination I/O module equipped with integral screw terminal landings. The isolated circuit design prevents ground loop current interference when Keyphasor signals are tied in parallel to third-party control or process automation systems. Field wiring lands directly on the rear I/O module without requiring external isolation hardware or separate termination blocks.
Option Code Breakdown
The suffix codes specify the channel architecture, backplane termination style, and agency approval level:
- Channel Option (-01): Single half-height card containing 2 Keyphasor input channels.
- I/O Module Option (-04): Isolated I/O module with internal terminations.
- Agency Approval Option (-01): cNRTLus agency approval for Class 1, Division 2 locations.
| Parameter | Specification |
|---|---|
| Model | 3500/25-01-04-01 |
| Brand | Bently Nevada |
| Product Type | Keyphasor Module |
| Channel Configuration | Single half-height 2-channel card (-01) |
| I/O Module Type | Isolated I/O with Internal Terminations (-04) |
| Agency Approval | cNRTLus (Class 1, Division 2) (-01) |
| Input Signal Range | +5.0 VDC to -11.0 VDC (Isolated I/O) |
| Frequency Range | 0.017 Hz to 20 kHz (1 to 1,200,000 cpm) |
| Power Consumption | 3.2 W typical |
| Operating Temperature | -30 deg C to +65 deg C (-22 deg F to +150 deg F) |
Frequently Asked Questions
Q: What function does the isolated I/O module (-04) perform on the 3500/25-01-04-01?
A: The -04 isolated I/O module provides galvano-electrical isolation between the 3500 rack and external plant systems, permitting parallel signal wiring without ground loops.
Q: What input signal range is supported by this isolated Keyphasor card?
A: When paired with the isolated -04 I/O module, the input transducer signal range is +5.0 VDC to -11.0 VDC.
Q: What hazardous area certification is designated by the -01 agency approval code?
A: The -01 approval code indicates cNRTLus certification for Class 1, Division 2 hazardous area environments.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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