The Bently Nevada 3500/32M 149986-02 4-Channel Relay Module is a full-height module that provides four relay outputs. These modules can be placed in any available slots to the right of the Transient Data Interface Module. Each relay output on the 4-Channel Relay Module can be independently programmed to perform voting logic. Additionally, each relay includes Alarm Drive Logic.

Programming for the Alarm Drive Logic utilizes AND and OR logic and can incorporate alarming inputs such as Alert and Danger statuses, Not-OK signals, or individual PPLs from any monitor channel or any combination of monitor channels in the rack. You can customize this Alarm Drive to suit your specific application needs using the 3500 Rack Configuration Software.

Specifications

Inputs:

• Power Consumption: 5.8 watts typical

Outputs:

• OK LED: Illuminates when the module is functioning properly.
• TX/RX LED: Flashes to indicate proper communications between this module and other modules within the rack.
• CH ALARM LED: Illuminates to indicate that the Relay Channel is in an alarm state.

Relays:

• Type: Single-pole, double-throw (SPDT) relays
• Environmental Sealing: Epoxy-sealed
• Arc Suppressor: 250 Vrms, installed as standard
• Contact Life: 100,000 cycles @ 5 A, 24 Vdc or 240 Vac
• Operation: Each relay of the four channels is switch selectable for Normally De-energized or Normally Energized.

Environmental Limits:

• Operating Temperature: -30 °C to +65 °C (-22 °F to +150 °F)
• Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F)
• Humidity: 95%, non-condensing

Physical Characteristics: Main Module:

• Dimensions (Height x Width x Depth): 241 mm x 24.4 mm x 242 mm (9.50 in. x 0.96 in. x 9.52 in.)
• Weight: 0.7 kg (1.6 lb.)

I/O Module:

• Dimensions (Height x Width x Depth): 241 mm x 24.4 mm x 99.1 mm (9.50 in. x 0.96 in. x 3.90 in.).
• Weight: 0.4 kg (1.0 lb.)

Rack Space Requirements:

• Main Module: 1 full-height front slot.
• I/O Modules: 1 full-height rear slot.

Contact Ratings for Standard Systems: Standard Relays:

• Minimum switched current: 100 mA @ 12 Vdc
• DC specifications (Resistive load):
  • Maximum switched current: 2 A @ 0V to 30 Vdc
  • 0.75 A @ 48 Vdc
  • 0.2 A @ 125 Vdc
• Max switched voltage: 125 Vdc
• AC specifications (Resistive load):
  • Maximum switched voltage: 250 Vac
  • Maximum switched current: 2 A
  • Maximum switched power: 450 VA

Contact Ratings For Functional Safety Systems and Hazardous Area Systems: Standard Relays:

• Minimum switched current: 100 mA @ 12 Vdc
• DC specifications (Resistive load):
  • Maximum switched current: 2 A @ 0V to 30 Vdc
  • Maximum switched voltage: 30 Vdc
• AC specifications (Resistive Load):
  • Maximum Switched Voltage: 30 Vac
  • Maximum Switched Current: 2 A