Emerson digitax st series - Control terminals

Digitax ST Installation Guide 21
Issue: 2 www.controltechniques.com
Safety Information Introduction Mechanical Installation
Electrical Installation
4.4 Control terminals
Figure 4-7 Default terminal functions
For control terminal specification, refer to the Technical Data Guide.
The control circuits are isolated from the power circuits in the drive by basic insulation
(single insulation) only. The installer must ensure that the external control circuits are
insulated from human contact by at least one layer of insulation (supplementary
insulation) rated for use at the AC supply voltage.
WARNING
0V common
External 24V supply
0V common
Analog speed
reference 1
Connections for
single-ended input
signal
Connections for
differential input signal
0V common
0V common
0V common
Analog input 2
Analog input 1
0V common
1
2
5
6
3
21
22
23
24
25
26
27
28
29
30
31
41
42
At zero speed
Reset
Run forward
Run reverse
Analog input 1/
input 2 select
Jog forward select
SAFE TORQUE OFF /
Drive enable
Status relay
Drive OK
Speed
0V common
Analog
speed
reference 2
4
7
11
9
10
8
Torque (active
current)
Analog input 3
Motor thermistor
Connectors specification:
Maximum size of control
connections cable =
1.5mm (16AWG)
2
Torque setting =
0.2 N m (1.8 lb in)
Status relay cable =
2.5mm (12AWG)
2
Torque setting =
0.5 N m (4.4 lb in)
If terminal 31 is used as a SAFE TORQUE OFF function, the cable must be shielded or
segregated.
NOTE