3500/33-01-02 Relay Output Module – Bently Nevada 16-Channel

3500/33-01-02 – Bently Nevada 16-Channel Relay Output Module

Full-height module · 16 independent SPDT relays · programmable voting logic · fits 3500 rack

Product Overview

• 3500/33-01-02 provides 16 relay outputs for 3500 rack systems.
• Each output is independently programmable with voting logic (AND/OR).
• Alarm Drive Logic uses alert/danger status, Not-OK, and measured variables from any monitor channel.
• Epoxy-sealed relays with built-in arc suppressor (250 Vrms).

Key Technical Specifications

• Power Consumption: 5.8 W typical
• Relay Type: SPDT (single-pole double-throw)
• Contact Life: 10,000 cycles
• Relay Operation: Four groups of four channels – switch selectable for Normally De-energized (ND) or Normally Energized (NE).
• Environmental Sealing: Epoxy-sealed · arc suppressor installed as standard

Contact Ratings – Standard Systems

• DC (resistive load): Max 5 A · Max 125 Vdc · Max power 70 W @ 24 Vdc, 10 W @ 48 Vdc, 9 W @ 60 Vdc
• AC (resistive load): Max 5 A · Max 250 Vac · Max 1200 VA
• Min switched current: 100 mA @ 5 Vdc

Special Low Current Relay (Gold-plated)

• Min switched current: 1 mA @ 1 Vdc
• Max switched current: 100 mA @ 48 Vdc
• AC up to 120 Vac: Min 1 mA (gold) · Max before damage 5 mA

Physical Dimensions & Rack Space

• Main Module: 241 x 24.4 x 242 mm (9.50 x 0.96 x 9.52 in) · 0.7 kg (1.6 lb) · 1 full-height front slot
• I/O Module: 241 x 24.4 x 99.1 mm (9.50 x 0.96 x 3.90 in) · 0.4 kg (1.0 lb) · 1 full-height rear slot

Front Panel LEDs & Status

• OK LED: Illuminated when module operates properly.
• TX/RX LED: Flashes during communication with other 3500 rack modules.
• CH Alarm LED: Illuminated when relay channel is in alarm state.

Compatible Systems & Applications

• Fits standard 3500 rack – any slot to the right of TDI module.
• Ideal for reciprocating compressors, turbines, and critical rotating machinery.
• Works with Modicon Quantum and other DCS/PLC systems for alarm and shutdown logic.

Oiltech Controls’s Insight

• The 3500/33-01-02 offers flexible voting logic for critical alarm sequences.
• Its ND/NE switchable groups simplify integration with existing safety systems.
• Gold-plated low current option supports sensitive instrumentation circuits.

Professional FAQ – 5 Expert Q&A

• Q: Can I mix ND and NE relays on the same module?
  A: Yes. The 16 channels are divided into four groups of four. Each group is switch-selectable for ND or NE operation, giving you flexibility per application.
• Q: What is the difference between standard and low current relay versions?
  A: Standard relays handle up to 5 A (250 Vac / 125 Vdc). Low current (gold-plated) relays are for sensitive circuits – min 1 mA @ 1 Vdc, max 100 mA @ 48 Vdc. Do not exceed 5 mA for AC gold contacts to avoid damage.
• Q: How do I program the voting logic for each relay?
  A: Use the 3500 configuration software. Each relay’s Alarm Drive Logic supports AND/OR combinations of alert/danger status, Not-OK, and measured variables from any monitor channel in the rack.
• Q: Is this module compatible with existing 3500 racks?
  A: Absolutely. The 3500/33-01-02 fits any full-height front slot to the right of the TDI. It communicates via the rack’s backplane – no additional wiring needed.
• Q: What should I consider when choosing between 3500/33 and other relay modules?
  A: Choose 3500/33 for 16 independent channels with programmable logic. It’s ideal when you need per-channel voting and mixed ND/NE groups. For fewer channels or fixed logic, consider the 3500/32 series. Always verify contact ratings match your load (AC/DC, current, voltage).

Shipping, Warranty & Support

• Shipping: FedEx, UPS, DHL – 24 to 28 hours dispatch after order.
• Warranty: 12 months against defects · technical verification before shipment.
• Inquiries: info@oiltechcontrols.com · +86 158 8020 0923 (WhatsApp)

Why Buy From Oiltech Controls?

• Decades of expertise – over 15 years in industrial automation spares.
• Worldwide delivery – reliable logistics network.
• Quality assured – each unit tested before shipment.
• 12-month coverage – full warranty on all modules.
• Legacy system support – we keep obsolete controls running.
• Technical verification – every order validated by our engineers.

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