Tools Required; Special Test Equipment; Signal Test Board - Danfoss VLT FC Series Service Manual

Test Procedures

8.2 Tools Required

Item
ESD protection kit
Metric socket set
Socket extensions
Magnetic sockets
Ratchet wrench
Torque wrench
Torx driver set
Needle nose pliers
Screwdrivers
Table 8.2 Tools Required to Service Drives
Item
Digital Volt-Ohm Meter
(PWM-compatible)
8 8
Analog voltmeter (with safety
probe tip extenders)
Oscilloscope
Clamp-on ammeter
Split bus power supply

Signal test board

Parallel drive module service
1)
kit
Table 8.3 Instruments Recommended to Test Drives
1) Used for testing only VLT
90
®
VLT
Description
Wrist strap and mat
7–19 mm
100–150 mm (4 in and 6 in)
–
–
Torque range 0.5–19 Nm (6–170 in-lb)
T10–T50
–
Standard and Phillips
Description
•
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.
–
–
Rated for true RMS
p/n 130B3146
p/n 176F8437
p/n 176F3745
®
Parallel Drive Modules.
Danfoss A/S © 02/2019 All rights reserved.
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9

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.
MG94A502