YASKAWA A1000 Quick Start Manual page 27


External Reference Selection and Acceleration/ Deceleration Times

Frequency Reference Selection (b1-01)
Set parameter b1-01 according to the frequency reference used.
b1-01 Reference source
0 Operator keypad
1 Analog input
2 Serial Comm.
3 Option Card
4 Pulse input

Run Command Selection (b1-02)
Set parameter b1-02 according to the run command used.
b1-02 Reference source
0 Operator keypad
1 Multi-Function digital input
2 Serial Comm.
3 Option Card

Acceleration/ Deceleration Times and S-Curves
There are four sets of acceleration and deceleration times which can be set in the C1- parameters. The default
activated accel/decel times are C1-01/02. Adjust these times to the appropriate values required by the application. If
necessary S-curves can be activated in the C2- parameters for softer accel/decel start and end.

Reference and Run Source
The drive has a LOCAL and a REMOTE mode.
Status
LOCAL
REMOTE
If the drive is operated in the REMOTE mode, make sure that the correct sources for the frequency reference and run
command are set in parameters b1-01/02 and that the drive is in the REMOTE mode.
The LED in the LO/RE key indicates where the Run command is input from.
LO/RE LED
ON
OFF
YASKAWA Europe TOEP C710616 88A - AC Drive A1000 IP23/54 Floor Standing - Quick Start Guide
Set the frequency references in the d1- parameters and use digital inputs to switch over between
different reference values.
Apply the frequency reference signal to terminal A1, A2, or A3.
Serial Communications using the RS422/485 port
Communications option card
Set the frequency reference at terminal RP using a pulse train signal.
RUN and STOP keys on the operator
Multi-Function digital input
Serial Communications using the RS422/485 port
Communications option card
The Run/ Stop command and the frequency reference are entered at the operator keypad.
The Run command source entered in parameter b1-02 and the frequency reference source entered in parameter
b1-01 are used.
Run command is issued from operator.
Run command is issued from a different source than the operator.
Frequency reference input
Run command input
Description
Description
5 Start Up
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