Motion 3000ES Escalator Control
52 Manual # 42-02-E001
E-34
Lower step upthrust fault.
P34 input on J3 of EC-SCB.
Check input device to P34 terminal.
E-35
Underspeed fault. Right
handrail speed monitoring.
S5 input on J1 of EC-MCB.
Check connection and function of input device.
Confirm that F3-04 is set to the same value as USP4. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-04.
Check escalator mechanical integrity.
E-36
CAN communication fault,
EC-MCB
Check connections at CL1 and CH1 between EC-MCB and EC-SCB.
Use a shielded, twisted pair cable for CAN communication. Check CAN
termination.
E-37
Brake fault. P8 input on J2 of
EC-MCB.
Check brake contact.
If brake contact is not present, set parameter F1-01 = 2.
E-38
Auxiliary brake fault. P22
input on J4 of EC-MCB
Check auxiliary brake contact.
If brake contact is not present, set parameter F1-02 = 3.
E-39
Reversal detection fault on
EC-SCB. S6 and S7 input on
J1 of EC-SCB.
Co
nfirm that F4-09 is set to the same value as DPNP when escalator
is going UP. If not, refer to the Escalator Learn Operation to re-learn
Verify that sensors are spaced < 1/2 tread width apart.
E-40
Overspeed fault. Step Speed/
Missing Step monitoring
using lower sensor 1. S6
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-05 is set to the same value as DSP1. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-05.
Check escalator mechanical integrity.
E-41
Overspeed fault. Step Speed/
Missing Step monitoring
using lower sensor 2. S7
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-06 is set to the same value as DSP2. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-06.
Check escalator mechanical integrity.
E-42
Overspeed fault. Left handrail
speed monitoring. S8 input
on J1 of EC-SCB.
Check connection and function of input device
Confirm that F3-07 is set to the same value as DSP3. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-07.
Check escalator mechanical integrity.
E-43
Overspeed fault. Right hand-
rail speed monitoring. S9
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-08 is set to the same value as DSP4. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-08.
Check escalator mechanical integrity.
E-44
Underspeed fault. Step
Speed/Missing Step monitor-
ing using lower sensor 1. S6
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-05 is set to the same value as DSP1. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-05.
Check escalator mechanical integrity.
E-45
Underspeed fault. Step
Speed/Missing Step monitor-
ing using lower sensor 2. S7
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-06 is set to the same value as DSP2. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-06.
Check escalator mechanical integrity.
E-46
Underspeed fault. Left hand-
rail speed monitoring. S8
input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-07 is set to the same value as DSP3. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-07.
Check escalator mechanical integrity.
E-47
Underspeed fault. Right
handrail speed monitoring.
S9 input on J1 of EC-SCB.
Check connection and function of input device.
Confirm that F3-08 is set to the same value as DSP4. If not, refer to
the Escalator Learn Operation to re-learn parameter F3-08.
Check escalator mechanical integrity.
E-48
CAN communication fault,
EC-SCB
Check connections at CL1 and CH1 between EC-MCB and EC-SCB.
Use a shielded, twisted pair cable for CAN communication.
E-49 P36 Input on J3 of EC-SCB
Check input device to terminal P36. User defined error message will be
generated for some software versions if programmed by user.
E-50
Contactor proving fault. P5
input on J2 of EC-MCB.
Check P5 input to verify that it is activated when the escalator is
stopped.
Table 18. Controller Fault Displays
Fault Description Troubleshooting
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