Introduction TMR Digital Output (DO) modules receive output signals from the Main Processors across three channels. These signals are then voted by special quadruplicated output circuitry, providing redundancy for critical signal paths. Each module incorporates a voltage-loopback circuit to verify the operation of each output switch independently. Ongoing diagnostics ensure channel and circuit integrity.
Module Specifications
16-Point Digital Output Module SpecificationsModel Numbers:
Nominal Voltage:
120 VDC
Type: TMR, DO
Output Signals:
16, commoned (3603E/T),
Voltage Range:
90-150 VDC
Voltage Drop:
< 1.5V, typical
Current Ratings, Maximum:
0.8A per point, 4A surge/10 ms
Load Leakage: 2 mA maximum @ 60 Hz
Fuses (on Field Termination):
1 per output, 1.0A fast-acting
Point Isolation:
1,500 VDC/ 2,500 VDC
Diagnostic Indicators:
On or Off state: 1 per point
Module Status: PASS, FAULT, ACTIVE
Field Alarm: LOAD/FUSE
Color Code: Blue
Conclusion TMR Digital Output Modules ensure safe and reliable operation of critical systems by providing redundant output circuits and comprehensive diagnostics. They support hot-spare capability and are designed for compatibility with various voltage ranges and signal types.
