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.
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.
Содержание Encore
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