Danfoss VLT HVAC Basic Drive - Warnings and Alarms

Parameter Overview
20-01 Feedback 1 Conversion
*[0] Linear
[1] Square root
20-8* PI Basic Setting
20-81 Process PI Normal/ Inverse
Control
*[0] Normal
[1] Inverse
20-83 Process PI Start Speed[Hz]
0.0 - 200.0, * 0.0
20-84 On Reference Bandwidth
0 - 200%, * 5
20-9* PI Controller
20-91 PI Anti Windup
[0] Off
*[1] On
20-93 PI Proportional Gain
0.00 - 10.00, * 0.01
20-94 PI Integral Time
0.10 - 9999.00s, * 9999.00
20-97 Process PI Feed Forward Factor
0 - 400%, * 0
22-** Appl. functions
22-4* Sleep mode
22-40 Minimum Run Time
0 - 600 s, * 10
22-41 Minimum Sleep Time
0 - 600 s, * 10
22-43 Wake-Up Speed [Hz]
0.0 - 400.0, * 100.0
22-44 Wake-Up Ref./FB difference
0 - 100%, * 10
22-45 Setpoint Boost
-100 - 100%, * 0
22-46 Maximum Boost Time
0 - 600 s, * 60
22-47 Sleep Speed [Hz]
0.0 - 400.0, * 0.0
22-6* Broken Belt Detection
22-60 Broken Belt Detection
*[0] Off
[1] Warning
[2] Trip
22-61 Broken Belt Torque
5 - 100%, * 10
22-62 Broken Belt Delay
0 - 600 s, * 10
24-** Appl. functions 2
24-0* Fire mode
24-00 Fire Mode Function
*[0] Disabled
[1] Enabled Run Forward
[2] Enabled Run Reverse
[3] Enable-Coast
[4] Enabled - Run Fwd/Rev
24-05 Fire Mode Preset Reference
-100 - 100%, * 0
24-09 Fire Mode Alarm Handling
*[1] Trip, Critical Alarms
[2] Trip, All Alarms/Test
24-1* Drive Bypass
24-10 Drive Bypass Function
*[0] Disabled
[2] Enabled (Fire Mode only)
24-11 Bypass Delay Timer
0 - 600 s, * 0
1.6 Warnings and Alarms
Fault
number
Alarm/
Warning
Bit
Number Fault text Warning Alarm
Trip
locked Cause of problem
2 16 Live zero error X X
Signal on terminal 53 or 54 is less than 50% of value set in par.
6-10, 6-12, 6-20 or 6-22. See also parameter group 6-0X
4 14 Mains ph. loss X X X
Missing phase on supply side or too high voltage imbalance. Check
supply voltage. See parameter 14-12
7 11 DC over volt X X Intermediate circuit voltage exceeds limit.
8 10 DC under volt X X
Intermediate circuit voltage drops below “voltage warning low”
limit.
9 9
Inverter
overload X X More than 100% load for too long.
10 8
Motor ETR
over X X
Motor is too hot due to more than 100% load for too long. See
parameter 1-90
11 7 Motor th over X X
Thermistor or thermistor connection is disconnected. See parameter
1-90.
13 5 Over Current X X X Inverter peak current limit is exceeded.
14 2 Earth Fault X X Discharge from output phases to ground.
16 12 Short Circuit X X Short-circuit in motor or on motor terminals.
17 4 Ctrl.word TO X X
No communication to frequency converter. See parameter group
8-0X
24 50 Fan Fault X X The fan is not working (Only on 400 V 30-90 kW units).
30 19 U phase loss X X Motor phase U is missing. Check the phase. See parameter 4-58.
31 20 V phase loss X X Motor phase V is missing. Check the phase. See parameter 4-58.
32 21 W phase loss X X Motor phase W is missing. Check the phase. See parameter 4-58.
38 17 Internal fault X X Contact your local Danfoss supplier.
44 28 Earth Fault X X Discharge from output phases to ground.
47 23
Control
Voltage Fault X X X 24 V DC may be overloaded.
48 25
VDD1 Supply
Low X X Control voltage low. Please contact your local Danfoss supplier
Quick Guide VLT HVAC Basic Drive Quick Guide
MG18A302 - VLT
®
is a registered Danfoss trademark 33
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