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IR104-V4 User Guide
Rev A
1 Introduction
Overview
Tri-M’s IR104 PC/104 relay module is designed for controlling low and high current loads operating in rugged
industrial environments. The IR104 features 20 opto-isolated digital inputs and 20 relay outputs, ideal for
industrial control applications. The bidirectional inputs are isolated up to 3000V and can handle input voltages
from 3V to 24V AC or DC. The 2×20 SPST (normally open) relays have dual 20-position detachable screw
terminal blocks designed for 14 to 24 AWG wiring. The contacts are UL Certified and rated for 5A, 250VAC and
30VDC, allowing the IR104 to directly control small motors or solenoids.
In order to take full advantage of the IR104, up to 4 modules can be stacked. This maximizes IR104’s
functionality to configure IRQs and input change flags. Tri-M also offers custom designs, such as 12V or Solid
State relays for lower current draw and less interference. For more information, please visit http://www.tri-m.
com/support/proservices.html.
Key Specifications
•
20 Opto-isolated bi-directional inputs with 3000V protection
•
20 SPST Output Relays with 20,000,000 Lifetime Cycles
•
Input Voltages from 3V to 24V AC or DC and Output UL ratings of 5A @30 VDC and 250VAC
• I/O Map configuration options such as Relay Output Control, Digital Input Reading, Input Change Flags,
and Interrupt Control Registers
•
Operating Temperature -25°C to +70°C (-13°F to +158°F) for rugged industrial environments
Options
Tri-M offers the following options:
•
Conformal Coating (Acrylic CH, Acrylic higher voltage CH1, Silicone CS, Urethane CU)
Ruggedized protection against the elements for temperature, fungal resistance, and humidity and
chemical.
•
Lead-Tin Soldering (LD)
Tri-M is RoHS compliant but also offers Lead-Tin soldering for automotive, military and
aerospace applications
•
Design Build (12V, SS, Non-Stackthrough)
The IR104 can be built with 12V or Solid State Relays, and without stackthroughs
•
Cables (Latch)
To secure the cables to the board, latching cables are available
For more information, please visit www.tri-m.com or call 1.800.665.5600 or +1.604.945.9565.
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