Control Terminal Specifications - Control Techniques Commander SE Advanced User's Manual

4.6

Control terminal specifications

The control terminals of the Commander SE drive are double-insulated from the power electronics and
single-insulated from the status relay contacts. Providing that the voltage on the status relay contacts
does not exceed 110V, the control terminals meet the requirements for SELV in EN50178. However, in the
WARNING event of a serious fault in the drive the safety barriers could be breached. The installer must ensure that
the external control circuits are insulated from human contact by at least one layer of insulation rated for
use at the AC supply voltage. If the control circuits are to be connected to other circuits classified as SELV
e.g. a personal computer, an additional isolating barrier must be included in order to maintain SELV
classification. Ensure that the correct fuses are installed at the drive input, and that the drive is connected
to the correct supply voltage.
4.6.1 Default configuration
All outputs (+24, +10V, Digital output and Analog output) could be permanently damaged if a negative
voltage greater than -1V is applied to them.
CAUTION
1 0V common
2 Local Speed reference input (A1)
Type of input
Voltage range
Scaling
Absolute maximum voltage range
Input impedance
Resolution
Accuracy
Sample time
3 +10V reference output
Voltage accuracy
Maximum output current
Protection
4 0V common
5 Remote current speed-reference input (A2)
Default
Type of input
Current range (programmable)
Absolute maximum voltage range
Input impedance
Resolution
Accuracy
Sample time
The remote current speed-reference input circuit incorporates a protection circuit to prevent any internal damage within the
drive in the event of an external controller fault. This protection circuit senses the input current and if this exceeds 25mA, a
FET disconnects the external controller from the drive. This FET will also disconnect the external controller signal when the
drive is powered off.
Commander SE Advanced User Guide
Issue Number: 4
Single-ended
0 to +10V
0V represents the value in parameter 01,
Minimum speed.
+10V represents the value in parameter
02, Maximum speed.
+35V to -18V with respect to 0V common
100kΩ
0.1% (10 bit)
± 2%
6ms
± 2%
5mA
tolerates continuous short circuit to 0V
4 - .20mA (See parameter 16)
Single ended
0-20mA, 20-0mA, 4-20mA, 20-4mA,
4-.20mA, 20-.4mA
+30V to -18V with respect to 0V common
200Ω
0.1% (10 bit)
± 2%
6ms
111