2-Wire Control; 3-Wire Control - YASKAWA P7 User Manual

To successfully operate the Drive remotely, an external run command must be received by the Drive. Parameter b1-02
specifies from where the run command will be accepted.
Although the Run Source and the Reference Source (b1-01) are normally taken from the same source (e.g. digital operator,
terminals or serial communication), this is not always the case.
To issue a run command from the digital operator: Set b1-02= "0: Operator", and use the HAND and OFF buttons to start
and stop the Drive.
To issue the run command from the terminals: Set b1-02= "1: Terminals", and select between 2-wire and 3-wire control
operation by doing the following:
2-Wire Control The factory default setting is for 2-wire operation. In the 2-wire configuration a closure between S1 and SN
will be interpreted as a Forward Run command by the Drive. A closure between S2 and SN will be interpreted as a Reverse
Run command. If both S1 and S2 are closed, the Drive will stop (decelerate to zero speed) and the digital operator will dis-
play an EF (external fault) alarm (Flashing).
3-Wire Control When any of the multi-function digital input parameters, H1-01 through H1-05, is set to 0, terminals S1 and
S2 become Run and Stop, respectively. The multi-function digital input that was set to 0 will function as a Forward/Reverse
input for the Drive. When the Forward/Reverse input is open the Drive will run in the Forward direction and when the input is
closed, the Drive will run in the Reverse direction.
In 3-wire operation a momentary closure (> 50mS) of S1 will cause the Drive to run provided that S2 is held closed. The
Drive will stop anytime the S2-SN connection is broken. If the 3-wire configuration is implemented via a 3-wire Initialization
(A1-03= "3330: 3-Wire Initial"), then terminal S3 becomes the Forward/Reverse input.
To issue a run command via serial communication
nication cable to R+, R-, S+, and S- on the removable terminal block.
To issue the Run command via the L
board (p/n SI/J) into the 2CN port on the Control PCB. Consult the manual supplied with the option board for instructions on
integrating the Drive into your L
IMPORTANT
Stop Operation
switch switch
(NC contact) (NO contact)
W ® option card: Set b1-02= "3: Option PCB", and plug a L
ON ORKS
®
W System.
ON ORKS
If b1-01= "3: Option PCB" but a L
error will be displayed on the digital operator and the Drive will not run.
S1
FWD Run/Stop
S2
REV Run/Stop
SN
Fig. 2 2-Wire Control
Run command
(run on momentary close)
Stop command
S3 or S5 (stop on momentary open)
Forward/reverse command
SN
(multi-function input)
Sequence input common
Fig. 3 3-Wire Control
:
Set b1-02= "2: Serial Com" and connect the RS-485/422 serial commu-
®
card is not installed in 2CN, an "OPE05" operator programming
W
ON ORKS
Programming 5 - 5
ORKS ®
W option
ON