FR500A&FR510A Series Vector Control Inverter
- 34 -
recommended to avoid drive faults as a result of noise. Operating instructions for switching value input
terminal
◆
A: Dry contact
(a) Internal power supply
(
b
)
External power supply
Fig.3-18 Dry contact
ATTENTION:
When external power supply is used, the jumper b24V and PLC must be removed.
Otherwise, it may result in equipment damage.
The voltage range of external power supply should be DC20
~
30V. Otherwise, normal operation
could not be assured and/or result in equipment damage.
◆
B: Open collector NPN connection
(a) Internal power supply
(
b
)
External power supply
Fig.3-19 External power supply open collector NPN connection
ATTENTION:
When external power supply is utilized, the jumper b24V and PLC must be removed.
The voltage range of external power supply should be DC20
~
30V, otherwise normal operation could
not be assured and/or hazard of equipment damage exists.
◆
C: Open collector PNP connection