Chapter 6 – Parameters
ACH 500 Programming Manual
6-3
DI1P,2P,3P
Start forward, start reverse, and stop.
Start and direction commands are given simultaneously with two separate
momentary push-buttons. The stop push-button is normally closed, and
connected to DI3. The start forward push-button is normally open, and
connected to DI1. The start reverse push-button is normally open, and
connected to DI2. Multiple start push-buttons are connected in parallel, and
stop push-buttons in series.
DI6
Two-wire start/stop.
0 V DC = Stop and 24 V DC = Start. Rotation direction is fixed.
DI6,5
Two-wire start/stop and direction.
Start/Stop is connected to DI6 and Reverse is connected to DI5. 0 V DC on
DI5 = Forward.
KEYPAD
Start/Stop command and Direction command are from the Keypad for Ext 1.
2 EXT 2 STRT/STP/DIR
This parameter selects the Digital Inputs used for Start/Stop and Reverse
commands. The choices are the same as Parameter 10.1.1 (Ext 1 Strt/Stp/Dir).
3 DIRECTION
This parameter allows you to fix rotation direction to
FORWARD
or
REVERSE
. If you select
REQUEST
, the rotation direction is selected by
Digital Inputs as defined in Parameters 10.1.1 (Ext 1 Strt/Stp/Dir) and 10.1.2
(Ext 2 Strt/Stp/Dir) or by keypad push-button. If
FAST REV
is selected, and
Parameter 20.2.3 (Stop Function) is set to
COAST
, the modulator starts to
operate in a reverse direction immediately when
REVERSE
is requested. This
procedure results in fast reversing.