ISR: 2 Channel Relay with Intrinsically Safe Outputs
• 2 Independent Relays
• Compact Design
• Contact or Probe Input
• Built-in De-bounce
Delays
• Power and Output status
LEDs
• Low Voltage Design for
12 or 24VAC/DC
• Din Mounting
• 12 or 24VDC Battery
Back-Up
Operation
Two Channel Relay
The ISR has two independent outputs to the hazardous area and two independent (dry contact) relay outputs. The outputs to the hazardous area can be switches or, when used with a conductive liquid, electrodes. When output “A” is completed (contact closed or low resistance), 0.5 second later the dry output contact “A” is closed and the “A” LED turns On. When output “A” is opened (contact opened or high resistance), 0.5 second later the dry output contact “A” opens and the “A” LED turns Off. “B” operates the same way, but is independent of “A.” There is also a supply power LED indicator. The ISR must be located and grounded in a non-hazardous location.
Specifications
Electrical
Supply Voltage: 12 or 24 AC/DC ±10%
Power: 1.5 watts
Inputs: Switch Closure or Probe
Input Sensitivity: 10k - 100k Ω
Pick-up & Drop-out Delays: 0.5 second
Max. Open Circuit Voltage: 5.9 volts DC
Max. Source Current: 0.1 milliamps
Output Rating @ 25°C:
5 Amps @ 125VAC
5 Amps @ 30VDC or 250VAC
20,000,000 Mechanical Cycles
Physical
Mounting: Din Rail mount
Termination: Touch safe screw terminals, with lift mechanism,
#12 AWG max.
Weight: 10 Oz.
Ambient Temperatures
Operating: 0°C to 55°C
Storage: -40°C to 85°C