Yaskawa GPD503 Drive - Manual (Page 7)

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WARNING
Do not touch circuit components until main input power has been turned off and
“CHARGE” lamp is extinguished. The capacitors are still charged and can be
quite dangerous.
Do not connect or disconnect wires and connectors while power is applied to the
circuit.
CAUTION
Know your application before using either Initialization function of Sn-03. This
constant must be set to 0000 for Drive mode operation. (See paragraph 2.25 for
additional information.)
1110 = Factory 2-Wire Control Initialization (Maintained RUN Contact)
1111 = Factory 3-Wire Control Initialization (Momentary START/STOP Contact)
Entering either Initialization code resets all constants EXCEPT Sn-01 AND Sn-02 to
factory settings, and automatically returns Sn-03 setting to 0000. If the GPD 503 is
connected for 3-Wire control and this constant is set to 1110 (2-Wire Control
Initialization), the motor may run in reverse direction WITHOUT A RUN COMMAND
APPLIED. Equipment damage or personal injury may result.
IMPORTANT
Always ground the GPD 503 using ground terminal G ( E ). See paragraph 1.4.3,
"Grounding".
Never connect main circuit output terminals T1, T2, and T3 to AC main circuit power
supply.
All constants have been factory set. Do not change their settings unnecessarily.
Do not perform a “HIPOT” voltage test on any part of the GPD 503. Equipment uses semi-
conductors and is vulnerable to high voltage.
The Control PCB employs CMOS ICs which are easily damaged by static electricity. Use
proper electrostatic discharge (ESD) procedures when handling the Control PCB.