Fan Tests - Danfoss VLT FC 100 Service Manual

Test Procedures
Replace the corresponding current sensor if a reading of
greater than 15 mV occurs. See the disassembly
instructions in chapter 7 Disassembly and Assembly
Instructions.
Table 6.6 and Table 6.7 contain approximate resistance
readings based on power and voltage rating and the
current scaling card. When measuring with the signal test
board, the reading could be higher due to meter lead
resistance. A reading of no resistance indicates a missing
scaling card.
Scaling Resistance
Measured in Ω
FC 202, FC 102 & FC 103
4.6
3.8
3.1
2.6
5.1
4.2
4.5
3.8
3.1
2.6
5.1
4.2
2.6
2.6
2.3
4.2
4.2
2.6
2.3
4.2
2.6
Table 6.6 Scaling Resistance 380–500 V
MG94A222
Service Manual
VLT Model
FC 302
N110T4 N90kT5
N132T4 N110T5
N160T4 N132T5
N200T4 N160T5
N250T4 N200T5
N315T4 N250T5
P110T4 P90kT5
P132T4 P110T5
P160T4 P132T5
P200T4 P160T5
P250T4 P200T5
P315T4 P250T5
P355T4 P315T5
P400T4 P355T5
P450T4 P400T5
P400T4 P450T5
P560T4 P500T5
P630T4 P560T5
P710T4 P630T5
P800T4 P710T5
P1M0T4 P800T5
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
Scaling Resistance
Measured in Ω
FC 202, FC 102 & FC 103
5.9
5.9
5.9
5.9
5.0
4.0
3.2
2.7
5.6
5.9
5.9
5.9
5.9
5.9
5.9
4.5
3.1
3.1
2.6
5.1
4.5
4.5
3.8
2.6
4.5
3.8
2.6
4.5
3.8
2.6
Table 6.7 Scaling Resistance 525–690 V

6.4.13 Fan Tests

All fan tests can be performed with the unit powered from
the AC line power or with the power card powered in split
bus mode. Any time a fan is commanded to start, the
control card checks the fan feedback signal. If the feedback
is missing, the adjustable frequency drive issues an alarm
or warning based on which fan feedback is missing.
Mixing Fan
The mixing fan should operate any time the adjustable
frequency drive is powered up. If the adjustable frequency
drive is powered and the mixing fan is not running,
replace the mixing fan.
VLT Model
FC 302
N75kT7 N55kT7
N90kT7 N75kT7
N110T7 N90kT7
N132T7 N110T7
N160T7 N132T7
N200T7 N160T7
N250T7 N200T7
N315T7 N250T7
N400T7 N315T7
P45kT7 P37kT7
P55kT7 P45kT7
P75kT7 P55kT7
P90kT7 P75kT7
P110T7 P90kT7
P132T7 P110T7
P160T7 P132T7
P200T7 P160T7
P250T7 P200T7
P315T7 P250T7
P400T7 P315T7
P450T7 P355T7
P500T7 P400T7
P560T7 P500T7
P630T7 P560T7
P710T7 P630T7
P800T7 P710T7
P900T7 P800T7
P1M0T7 P900T7
P1M2T7 P1M0T7
P1M4T7 P1M2T7
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