IAI America ERC2 - Manual (Page 7)

CAUTION
5. Plugging/Unplugging ERC2PIO Teaching Tools
[1] When plugging or unplugging a teaching tool (PC software/teaching pendant) connector, make sure the
power is turned off. If the connector is plugged or unplugged while the power is on, internal circuits may be
damaged.
[2] Install a diode in parallel with the relay coil shown in the circuit diagram below, or use a relay coil with built-
in diode. If there is no diode, internal circuits may be damaged.
* To eliminate noise, install noise killers (or diodes in the case of DC circuit) for the coils of all relays,
solenoid valves, etc. This is also mentioned in the operation manual.
Teaching pendant
(optional)
PC software
(optional)
Do not plug or unplug these connectors
when the ERC2 power is on.
External EMG
reset switch
External EMG
switch
Teaching
pendant
EMG
switch
Connection
detection circuit
Motor power
supply
Control
power supply
Install a diode