Melec GD-5410 Instruction Manual page 26

６－４．Inputting Power
(1) Input power (single-phase 100-115V) into the cable connected to No.2
and No.3 terminals of J2.
 I
Do not contact with a wet hand.
Doing so may cause electric shock.
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The marks,  and 
indicate terminals on which power voltage
is applied.
Do not touch such terminals while
inputting power and while POWER LED is on.
Doing so may cause electric shock.
 I
Unexpected behavior of the motor may cause
breakage of the machine or injury.
Maintain the state where emergency stop is
enabled at any time.
-26-
Instructions Manual
, on the front panel