Danfoss VLT FC Series Service Guide

Scaling resistance
measured in Ω
Model Drive modules
FC 102, FC 103,
and FC 202
FC 302
4.0 N315 N250 2-module system
3.2 N400 N315 2-module system
3.2 N450 N355 2-module system
2.7 N500 N400 2-module system
5.6 N560 N500 2-module system
5.6 N630 N560 2-module system
3.2 N710 N630 4-module system
2.7 N800 N710 4-module system
2.7 N900 N800 4-module system
5.6 N1M0 N900 4-module system
5.6 N1M2 N1M0 4-module system
Table 8.13 Scaling Resistance, Parallel Drive Systems,
12-pulse, 525–690 V
Scaling resistance
measured in Ω
Model
FC 102, FC 103, and
FC 202
FC 302
2.7 N355 N315
2.5 N400 N355
2.3 N450 N400
2.0 N500 N450
1.8 N560 N500
Table 8.14 Scaling Resistance, E1h–E4H Units, 380–500 V
Scaling resistance
measured in Ω
Model
FC 102, FC 103, and
FC 202
FC 302
4.0 N450 N355
3.8 N500 N400
3.1 N560 N500
2.7 N630 N560
2.5 N710 N630
2.1 N800 N710
Table 8.15 Scaling Resistance, E1h–E4h Units, 525–690 V
8.5.13 Fan Tests
All fan tests can be performed with the unit powered from
the AC mains 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 drive issues an alarm or warning based on
which fan feedback is missing.
In E-sized drives, there are parameters that show the speed
feedback for each fan. Fan speed dierences of less than
200 RPM are meaningless.
•
Parameter 43-13 PC Fan A Speed for input plate
mixing fan.
•
Parameter 43-14 PC Fan B Speed for left input
plate mixing fan or power card mixing fan.
•
Parameter 43-20 FPC Fan A Speed for left heat sink
fan.
•
Parameter 43-21 FPC Fan B Speed for the middle
heat sink fan.
•
Parameter 43-22 FPC Fan C Speed for the right
heat sink fan.
•
Parameter 43-24 FPC Fan E Speed for LCP side door
fan.
•
Parameter 43-25 FPC Fan F Speed for lock side
door fan.
NOTICE
POWER REQUIREMENTS
The split bus power supply must have sucient power
when testing E1h–E4h drives. Fan load in E-sized drives
is >700 W.
Mixing fan
In D-sized drives, the mixing fan operates any time the
drive is powered up. If the drive is powered and the
mixing fan is not running, replace the mixing fan.
In E-sized drives, the operation of the mixing fan is
controlled and only runs when commanded.
Heat sink and door/top fans
Parameter 14-52 Fan Control can be used to command the
fans to run at 100% speed.
1. Use parameter 14-52 Fan Control to command the
fans to run at 100% speed.
2. Conrm that the heat sink fan is running by
checking for airow through the back channel of
the drive.
3. Conrm that the door/top fan is running by
checking for airow around the fan.
The 2 fans accelerate at dierent rates and can take several
seconds, but both operate at 100% speed.
Incorrect reading
If neither fan is running, the most likely cause is that the
fan control circuit on the power card (or fan power card in
E-sized drives) is faulty. Replace the power card or fan
power card. If only 1 fan is running, the most likely cause
is that the other fan is faulty. Replace the failed fan.
Test Procedures
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
116 Danfoss A/S © 02/2019 All rights reserved. MG94A502
88

Danfoss VLT FC Series Specifications

General

Brand	Danfoss
Model	VLT FC Series
Category	DC Drives
Language	English