Precautions For Control Signals Wiring - Amtech Axpert-Eazy Series Instruction Manual

2-4 Precautions for control signals wiring

When wiring (control circuit wiring) to the control terminal block, separate the main circuit wiring
(terminals L1, L2, L3, L+1, L+2, L-, U, V, W) and the other drive wires and power wires.
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Use a 0.13mm (AWG 26) to 0.8mm² (AWG 18) wire for wiring to the control circuit. The
tightening torque must be 0.6N.m (5.3 lb-inches).
Use a twisted pair wire or twisted pair shield wire for wiring to the analog signal circuit such as
the analog references and meters. Connect the shield wire to the 0V terminal of the unit. The
wire length must be 30meters (98.4') or less.
The length of the sequence input/output contact wire must be 50meters (164') or less.
The sequence input can be changed between sink logic and source logic by changing the jumper
position JP1 in PCA-2014A/PCA-2004A between "SINK" and "SOURCE" position respectively.
Open cover designated as "Control Unit" to access this jumper.
Observe the precautions listed in "5. Control Input/Output Terminals".
After wiring, always check the mutual wiring.
At this time do not carry out a megger check or buzzer check on the control circuit.
• Are there any wire scraps or foreign matter left around the terminals?
• Are any screws loose?
• Is the wiring correct?
• Is any terminal contacting any other terminal?
If so, take the necessary corrective measures before proceeding further.
Fiber Optic Cables
Handle the fiber optic cables with care. When unplugging optic cables, always grab the connector, not
the cable itself. Do not touch the ends of the fibers with bare hands, as the fiber is extremely sensitive
to dirt. The minimum allowed bend radius is 35mm (1.4").
Axpert-Eazy AC Variable Frequency Drive
CAUTION
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