Nordson Encore - Controller Parts

Troubleshooting
4-12
Part 1618871−01
 2020 Nordson Corporation
Relay Board
See Figure 4-6 and refer to Table 4-5. Use the Relay Board LEDs to help
diagnose problems.
Table 4-5 Relay Board LEDs
LED Function LED
Color
LED State Fault Correction
LED1 Encoder
(labeled as
Manual Enable)
Green Normal: Blinking
Fault: OFF
Check if conveyor is moving.
Check if connector PC2 is plugged in.
Check encoder power.
LED2 Spray Gun
Power
Green Normal: ON
Fault: OFF
Booth is running.
Check wiring to PC1.
Check voltage on J2−3 and J2−4 (red and
black). Voltage should be +24 V.
Check 4A fuse.
Check PS1.
LED3 +12 V Green Normal: ON
Fault: OFF
LED4 +24 V Green Normal: ON
Fault: OFF
Check power on J7−5 and J7−8. Should be
23.5−24.5 Vdc.
Check PS2.
LED5 Conveyor Green Normal: ON
Fault: OFF
Check external wiring to PC1. DC/AC signal
24V−230 Vac or Vdc.
Check J7−9, voltage should change with
conveyor signal 0/24 V.
Check keyswitch wiring.
Check keyswitch contacts are assembled
correctly.
LED6 Lockout Green Normal: ON
Fault: OFF
Check external wiring to PC1, DC/AC signal
24 V−230 Vac or Vdc.
Check J7−11 and J7−12. Voltage should
change with lockout signal 0/24 V.
Check keyswitch wiring.
Check keyswitch contacts are assembled
correctly.
LED7 Alarm Red Normal: ON
Fault: OFF
Check voltage on J7−15 and J7−16. Should
be +24 V when system is OK.
Clear faults on Engage controller
touchscreen.