No Comm From Micro to STP3 (2REC-C2)
system
Description
No sync responses from Stepper 3 Module for 10 seconds, and the unit performs a required shutdown; after two minutes it shuts down all modules except the display.
Activation Conditions
Alarm 21100 is not active and No sync responses have been received from the Stepper 3 Module for 10 seconds.
Unit Behavior
Engine and Electric Operation: Required Shutdown. If alarm remains active for two minutes issue a shutdown command to all modules except the display.
Reset Conditions
Auto reset when Sync response received from the Stepper 3 Module in the past 10 seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
1. Check for additional CCB3 / CCB4 and STP3 / STP4 alarms • Alarms for CCB3 and CCB4 indicate a problem before CCB3 or at CCB3. • Alarms isolated to CCB3 indicate a problem before CCB3 or at CCB3. • Alarms isolated to CCB4 indicate a problem between CCB3 and CCB4, or at CCB4. • Stepper Alarms isolated to STP3 or STP4 indicate a problem with the associated CCB. 2. Check wiring to CCB3 a. Check wiring No physical damage to harness. Verify no damage, moisture, or corrosion in connectors. b. Check voltage. Check voltage at 3REC04 and 3REC15. Check voltage at 1REC01 and 1REC06. c. Check CAN connectivity. Verify CAN connectivity at 3REC05 and 3REC17. Verify CAN connectivity at 1REC02 and 1REC4.