Specifications

Chapter 4 Installing HA-655 driver
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4-4-3 Instructions for cabling
In addition to the noise suppression mentioned previously, one must also follow these instructions:
(1) Use twisted pair cables for I/O signals, and for encoder signals cables. When a host controls
several drivers, prepare I/O signal cables for each driver individually.
(2) Make the length of signal cables as short as possible.
(a) I/O signal cable: 3m or less
(b) Encoder signal cable (user’s responsibility): 20m or less, providing that the condition of wire
conductivity is less than 0.04 ohm/m.
Optional cables of 3m/5m/10m long are available.
(3) Install surge protector devices to magnetic relays coils, magnetic switches, and solenoids.
(4) Separate power cables (power source cables and motor cables) and I/O signal cables by more
than 30cm. Do not encase both cables in one pipe or duct, and do not bundle them.
(5) Do not open the end of analog signal cables such as speed signal cables.
(6) As the HA-655 driver is designed for industrial use, it provides no specific radio interference
provisions. Accordingly, line filters should be inserted for the power supply cables in the event that
the driver:
- is used in the vicinity of private residences.
-causes apparent radio interference.