Checking Tm Triac On Ice-Irb Board - MCi iControl User Manual

Troubleshooting
Signal (Left Edge)
SP4: Optional input. See job prints.
1: (4x) Common bus connections. 0VDC
2PI: (2x) 120VAC outputs for position indicator. LED
ON = bus powered.
2: (2x) #2 bus outputs. 120VAC. 2 LED lighted when
bus is powered.
3HA: (2x) #3 bus outputs for hoistway. 110VDC. 3HA
LED lighted when bus is powered.
3: (2x) #3 bus outputs. 110VDC. 3 LED lighted when
bus is powered.

Checking TM Triac on ICE-IRB Board

If the PM or M contactors are not picking, you might see the following fault messages:
• Motor Contactor Driver Proofing Fault
• Drive Ready On Fault
• Drive Enable Feedback Fault
• SCR Insufficient Armature Current
Note
These faults do not necessarily mean that the problem is with the TM Triac. It is recommended
to first consult the iControl Messages table in the Troubleshooting section and follow the trou-
bleshooting tips for the message(s) displayed.
To check the TM triac:
1. With controller power off remove the cover on the iBox.
2. The TM triac is in the upper right hand corner of the ICE-IRB board, which is the lowest
board under the iBox cover and has three relays on it.
3. Measure the resistance across the outside legs of the TM triac. The legs can be hard to
get to depending on the probe leads used. You can get to the upper leg from the left and
the lower leg from below.
4. If the resistance is 60-70 ohms then the triac is good and continue troubleshooting the
fault. If the resistance is 15 ohms or less the ICE-IRB board needs to be replaced.
6-102 Manual # 42-02-2222
Signal (Right Edge)
SAF: When used, provides an additional SAF
relay.
1: Common bus.
DOF: Door Open output.
DBF: Door Boost Output.
DCF: Door Close Output.
NUDG: Door Nudging Output.
RCO: Retiring Cam Output.
DLSP: Door Logic Supply Voltage. Selectable (by
wiring) power input to door control relays. See
job prints.
1: Common bus.
2: (2x) 120VAC bus.
3D: (2x): 110VDC bus.