Banner ES-UA-5A Instruction page 17

ES-UA-5A and ES-VA-5A E-Stop Safety Modules
Condition
Fault
Fault
Fault
Fault
MSCs do not energize
P/N 122365 rev. C
Indicator Status
Ch1 LED ON
Ch2 LED OFF
Power LED ON
Fault LED ON*
Ch1 and Ch2 LED flashing alter-
nately
Power LED ON
Fault LED ON*
Ch1 LED OFF
Ch2 LED Flashing
Power LED ON
Fault LED ON*
Ch1 LED Flashing
Ch2 LED OFF
Power LED ON
Fault LED ON*
Ch2 LED ON
Ch1 LED ON
All LEDs OFF
Dim LEDs
*Fault LED Flickers
Power LED ON
Fault LED OFF
Ch1 LED ON
Ch2 LED ON
Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Possible Causes / Solutions
Check switch.
Check connectors are properly seated.
Input concurrency fault: Both inputs did not open
concurrently. Both inputs are now closed.
Check switches/wiring at both inputs.
Open both inputs to clear the fault.
Input concurrency fault: Ch1 opened and closed and
is now open while Ch2 remained closed.
Check switches/wiring at both inputs.
Open both inputs to clear the fault.
Input concurrency fault: Ch1 remained closed while
Ch2 opened and closed and is now open.
Check switches/wiring at both inputs.
Open both inputs to clear the fault .
Possible input fault: Ch1 and Ch 2 are closed and are
(or were) shorted together.
Check wiring at both inputs.
Open both inputs to clear the fault.
Possible internal fault:
Return to factory for repair or replacement
Possible fault in machine control or wiring to mod-
ule:
Check input power connections or external fuses.
Check connectors are properly seated.
Dim Power LED:
Check power supply capacity and load.
Other LEDs dim:
May glow during power-up (normal).
Check power supply load and capacity.
This is normal while the Fault LED is ON.
Possible fault in machine control or an open circuit
between machine control and MSCs:
Check continuity of safety outputs (e.g. between termi-
nals 13 and 14).
Check control wires and connectors.
Check MSCs.
Tel: 763.544.3164
17