Motion Control Engineering Motion 4000

Status and Error Messages
5-3
5
Motion 4000
Note
When troubleshooting inputs, use built-in diagnostics to view memory registers so that you can
see the actual state of the input. Please refer to “Troubleshooting Example” on page 4-8.
Table 5.1 Status and Error Messages
Scrolling Message - Special Event Message
2 BUS IS LOW
Description: 2 bus (120VAC) monitoring input is low.
Troubleshooting:
1. Check fuse F2 on the HC-CTL board.
2. Check IDC connector J3, X4 on the HC-CTL board.
2FS BUS IS LOW
Description: 2FS bus (120VAC) monitoring input is low.
Troubleshooting:
1. Check fuse F2FS on the HC-CTL board.
2. Check IDC connector J3, F2FS on the HC-CTL board.
2HA BUS IS LOW
Description: 2HA (120VAC) bus monitoring input is low.
Troubleshooting:
1. Check fuse F2HA on the HC-CTL board.
2. Check IDC connector J3, X4 on the HC-CTL board.
2MV BUS IS LOW
Description: 2MV (120VAC) bus monitoring input is low.
Troubleshooting:
1. Check fuse F2MV on the HC-CTL board.
2. Check IDC connector J3, 2MV on the HC-CTL board.
2S INPUT FAILURE
Description: The 2 bus for safety circuits (2S input on the HC-CTL board) is in an incorrect state. If the
SAFC input has 120VAC, 2S must also have 120VAC.
Troubleshooting:
1. Check the wiring and devices connected to the SAFC input.
2. Check the HC-CTL board ICS relay.
ABD INPUT FAILURE
Description: The Bottom Down Access (ABD) switch is at 120VAC when the 2HA bus is low.
Troubleshooting:
1. Check for incorrect wiring or short on the HC-CTL board ABD input and 2HA or 2 bus
2. Check the bottom access switch and associated wiring per the job prints.
ABU INPUT FAILURE
Description: The Hoistway Access Bottom Up (ABU) switch is at 120VAC when the 2HA bus is low.
Troubleshooting:
1. Check for incorrect wiring or short on the HC-CTL board ABU input and 2HA or 2 bus.
2. Check the bottom access switch and associated wiring per the job prints.
ACCESS ENABLED
Description: The controller is on Inspection Access mode, activated by either 120VAC at the Access
Enable Switch input (screw terminal INA on the HC-CTL board) or by placing the front or rear hoistway or
car door bypass switches in the bypass position.