■ 3-wire operation
. When any parameter(multi-function digital input terminals S3 ~ S8) from 03-02 to 03-07 is set to 26,
and multi-function digital input terminals have been set to forward / reverse command, then S1 and
S2 terminals will be set to operation command and stop command of 3-wire control. The original
functions are turned off.
. When the inverter parameters 13-08 (Initialization) sets 3, 5 or 7 for 3-wire program initialization,
multi-function input terminal S7 is forward/reverse command.
. 3-wire control is shown as Figure 4.3.2. Multi-function input terminal S7 is forward/reverse command.
Figure 4.3.2 wiring example of 3-wire
. Terminal S1 must be ON for 50 ms or longer time so that the operation command can perform
self-sustaining. Refer to Figure 4.3.3 3-wire operation procedure.
≧
Figure 4.3.3 3-wire operation
procedure
(3). 00-02=2
. The inverter operation can be controlled by using RS-485 communication port.
. Please refer to parameter 09-- communication group to understand the description of communication
details of RS-422/485.
On Off
Time
Time
Time
Time
Off
(Stop)
Off
(Forward)
On (Reversal)
Operation instruction
Stop instruction
Forward/Reverse instruction
Motor Speed
Stop Stop Forward Forward Reverse
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