8.2 Tools Required
Item Description
ESD protection kit Wrist strap and mat
Metric socket set 7–19 mm
Socket extensions 100–150 mm (4 in and 6 in)
Magnetic sockets –
Ratchet wrench –
Torque wrench Torque range 0.5–19 Nm (6–170 in-lb)
Torx driver set T10–T50
Needle nose pliers –
Screwdrivers Standard and Phillips
Table 8.2 Tools Required to Service Drives
Item Description
Digital Volt-Ohm Meter
(PWM-compatible)
•
Rated for true RMS.
•
Rated for the mains AC
voltage and DC-link voltage
of the drive.
(DC-link voltage = 1.414 x
mains voltage).
•
Supports the diode mode.
Analog voltmeter (with safety
probe tip extenders)
–
Oscilloscope –
Clamp-on ammeter Rated for true RMS
Split bus power supply p/n 130B3146
Signal test board p/n 176F8437
Parallel drive module service
kit
1)
p/n 176F3745
Table 8.3 Instruments Recommended to Test Drives
1) Used for testing only VLT
®
Parallel Drive Modules.
8.2.1 Special Test Equipment
Special test tools have been developed to aid in testing
VLT
®
FC Series drives. The tools are required to perform
some of the procedures outlined in this chapter. See
chapter 9 Special Test Equipment for more information.
•
Split bus power supply (p/n 130B3146)
•
Parallel drive module service kit (p/n 176F3745)
•
Signal test board (p/n 176F8437)
8.2.2 Signal Test Board
The signal test board is used to test circuitry within the
drive and provides easy access to test points. Its use is
described in the procedures where called out. See
Table 9.2, for detailed pin descriptions.
The connector for the signal test board is on the power
card. To access the power card, remove the control card
mounting plate from the drive. Refer to
chapter 10.2.2 Control Card and Control Card Mounting Plate
or chapter 13.2.2 Control Card and Control Card Mounting
Plate. Then, plug the signal test board into power card
connector MK104.
Test Procedures
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
90 Danfoss A/S © 02/2019 All rights reserved. MG94A502
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