Instruction Manual

1-28 Installation/Wiring
I/O Wiring Examples (continued)
Reference Control
“Auto” Speed Sources
The drive speed command can be obtained from a number of different
sources. The source is determined by drive programming and the condition
of the Speed Select digital inputs, Auto/Manual digital inputs, or reference
select bits of a command word.
The default source for a command reference (all speed select inputs open or
not programmed) is the selection programmed in [Speed Ref A Sel]. If any
of the speed select inputs are closed, the drive will use other parameters as
the speed command source.
“Manual” Speed Sources
The manual source for speed command to the drive is either the HIM
requesting manual control (see ALT Functions
on page C-2) or the control
terminal block (analog input) if a digital input is programmed to “Auto/
Manual.”
Input/Output Connection Example Required Parameter Changes
3-Wire Control
Internal supply
• No Changes Required
3-Wire Control
External supply
(I/O Board dependent).
Requires 3-wire
functions only ([Digital
In1 Sel]). Using 2-wire
selections will cause a
type 2 alarm.
• No Changes Required
Digital Output
Relays shown in
powered state with drive
faulted. See page 1-26
.
• Select Source to Activate:
Parameters 380/384
Enable Input • Set Parameter P366 to “1” (Enable).
Start
24
25
26
27
28
Stop
Start
25
27
28
Stop
115V
/
+24V
Neutral/
Common
Power Source
11
12
13
14
15
16
Fault
NOT Fault
NOT Run
Run
or
32