Yaskawa iQpump Drive User Manual - Manual (Page 94)

5.1 iQpump Basic Programming Parameters
94 YASKAWA TM.iQp.01 iQpump Drive User Manual
drive. When the Forward/Reverse input is open the iQpump drive will run in the Forward direction and when the input is closed, the
iQpump drive will run in the Reverse direction.
In 3-wire operation a momentary closure (> 50 mS) of S1 will cause the iQpump drive to run provided that S2 is held closed. The
iQpump 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 S5 becomes the Forward/Reverse input.
Note: Reverse operation is disabled in the iQpump drive; however, in 3-wire control, one of the multi-function digital inputs
needs to be programmed to 0. Otherwise, the 3-wire control will not work.
Figure 5.8 3-Wire Control
To issue a Run command via serial communication: Set b1-02 = “2: Serial Com” and connect the RS-485/422 serial communication
cable to R+, R-, S+, and S- on the removable terminal block.
To issue the Run command via the network option card: Set b1-02= “3: Option PCB”, and plug a network option 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 iQpump drive
into your network System.
Important: If b1-01= “3: Option PCB” but a network card is not installed in 2CN, an “OPE05” operator programming error will be
displayed on the digital operator and the iQpump drive will not run.
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b1-03 Stopping Method
There are four methods of stopping the iQpump drive when the Run command is removed.
0: Ramp to stop: When the Run command is removed, the iQpump drive will decelerate the motor to 0 rpm. The rate of deceleration is
determined by the active deceleration time. The factory default Decel Time is in parameter C1-02.
When the output frequency has dropped below the DC Injection Start Frequency in b2-01 (Default = 0.5 Hz) DC current will be injected
in the motor at a level determined by b2-02 (50% Default). The DC Injection condition will occur for the time specified by b2-04 (0.0
Default), to establish the end point of the ramp. DC injection can be used to insure the motor is at zero rpm prior to the iQpump drive
shutting off.
Setting Description
0 Ramp to Stop (factory default)
1 Coast to Stop
2 DC Injection to Stop
3 Coast w/Timer
Stop switch
(NC contact) Operation switch
(NO contact)
Run command
(run on momentary close)
Stop command
(stop on momentary open)
Sequence input common
SN