Danfoss VLT FC 103, Руководство по эксплуатации

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Troubleshooting
•
Check fan power card wiring.
•
Replace fan power card.
8.6 Troubleshooting
Symptom Possible cause Test Solution
Display
dark/No
function Missing input power. See Table 5.5 . Check the input power source.
Missing or open fuses. See Open power fuses in this table for possible
causes.
Follow the recommendations provided.
No power to the LCP. Check the LCP cable for proper connection or
damage. Replace the faulty LCP or connection
cable.
Shortcut on control voltage
(terminal 12 or 50) or at control
terminals. Check the 24 V control voltage supply for
terminal 12/13 to 20–39, or 10 V supply for
terminals 50–55. Wire the terminals properly.
Incompatible LCP (LCP from
VLT
®
2800 or 5000/6000/8000/
FCD or FCM).
– Use only LCP 101 (P/N 130B1124) or LCP
102 (P/N 130B1107).
Wrong contrast setting. –
Press [Status] + [
▲
]/[
▼
] to adjust the
contrast.
Display (LCP) is defective. Test using a different LCP. Replace the faulty LCP or connection
cable.
Internal voltage supply fault or
SMPS is defective. – Contact supplier.
Intermittent
display Overloaded supply (SMPS) due
to improper control wiring or a
fault within the AC drive. To rule out a problem in the control wiring,
disconnect all control wiring by removing the
terminal blocks. If the display stays lit, the problem is in
the control wiring. Check the wiring for
shorts or incorrect connections. If the
display continues to cut out, follow the
procedure for
Display dark/No function .
Motor not
running Service switch open or missing
motor connection. Check if the motor is connected and the
connection is not interrupted by a service
switch or other device. Connect the motor and check the service
switch.
No mains power with 24 V DC
option card. If the display is functioning, but there is no
output, check that mains power is applied to
the AC drive. Apply mains power.
LCP Stop. Check if [Off] has been pressed. Press [Auto On] or [Hand On] (depending
on operating mode).
Missing start signal (Standby). Check parameter 5-10 Terminal 18 Digital Input
for correct setting for terminal 18. Use default
setting.
Apply a valid start signal.
Motor coast signal active
(Coasting). Check parameter 5-12 Terminal 27 Digital Input
for correct setting for terminal 27 (use default
setting).
Apply 24 V on terminal 27 or program
this terminal to
[0] No operation.
Wrong reference signal source. Check reference signal:
•
Local.
•
Remote or bus reference?
•
Preset reference active?
•
Terminal connection correct?
•
Scaling of terminals correct?
•
Reference signal available?
Program correct settings. Check
parameter 3-13 Reference Site . Set preset
reference active in parameter group 3-1*
References . Check for correct wiring. Check
scaling of terminals. Check reference
signal.
Maintenance, Diagnostics, a... VLT® Refrigeration Drive FC 103
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