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Installation
Connecting mains lter for power supply line
• Connect a mains lter in the AC power supply input to prevent the noise generated in the speed
controller from propagating externally through the power supply line. For a mains lter, use MC1210
(TDK-Lambda Corporation) or equivalent product.
• Install the mains lter as close to the speed controller as possible. Use cable clamps and other means
to secure the input cables and output cables rmly to the surface of the enclosure. Connect the ground
terminal of the mains lter to the grounding point, using as thick and short a wire as possible.
• Do not place the input cable parallel with the output cable. Parallel placement will reduce mains lter
eectiveness if the enclosure's internal noise is directly coupled to the power supply cable by means of
stray capacitance.
Connecting motor cable
When the motor cable is extended, use a cable of AWG18 (0.75 mm2) or more with a length of 10 m
(32.8 ft.) or less. When extending the rate generator lead wires, use a shielded cable.
Ferrite core
Install a ferrite core in the power line and motor cable line to eliminate external electrical noise.
Use a ferrite core of 7427122 (Würth Elektronik GmbH & Co. KG), ZCAT3035-1330 (TDK
Corporation) or equivalent.
Install the ferrite core as close to the speed controller as possible.
Wiring the control cable
Use a braided shielded cable of AWG24 (0.2 mm2) or more
for control cable, and keep the wiring distance as short as
possible [less than 2 m (6.6 ft.)].
Recommended strip length for braided
shielded cable
4 mm (0.16 in.) or more
Wire
Insulation Braided shield
Sheath
To ground a shielded cable, use a metal that will maintain
contact with the entire circumference of the cable. Attach a
cable clamp as close to the end of the cable as possible, and
connect it as shown in the gure.
Cable clamp
Shielded cable
Notes about installation and wiring
• Connect the motor, speed controller and other peripheral control equipment directly to the grounding
point so as to prevent a potential dierence from developing between grounds.
• When relays or electromagnetic switches are used together with the system, use mains lters and CR
circuits to suppress surges generated by them.
• Keep cables as short as possible without coiling and bundling extra lengths.
• Wire the power cables away from the control cables by providing a minimum clearance of 100 mm (3.94
in.) between them. If they have to cross, cross them at a right angle. Place the input cable and output
cable of a mains lter separately from each other.
