36 Unidrive M300/HS30 Quick Start Guide
Issue Number: 7
Defines the mode of analog input 1.
The table below gives all the possible analog input modes.
Pr 17 determines whether the reference is uni-polar or bi-polar.
See Minimum Speed (Pr 01). Allows negative speed reference in keypad mode.
16 Analog Input 1 Mode
RW Txt US
OL
Ú
4-20.S (-6), 20-4.S (-5), 4-20.L (-4),
20-4.L (-3), 4-20.H (-2), 20-4.H (-1),
0-20 (0), 20-0 (1), 4-20.tr (2),
20-4.tr (3), 4-20 (4), 20-4 (5), Volt (6)
Ö
Volt (6)
Value Text Function
-6 4-20.S Stop on loss
-5 20-4.S Stop on loss
-4 4-20.L 4-20 mA switching to equivalent of 4 mA input current on loss
-3 20-4.L 20-4 mA switching to equivalent of 20 mA input current on loss
-2 4-20.H 4-20 mA hold at level before loss on loss
-1 20-4.H 20-4 mA hold at level before loss on loss
0 0-20 0-20 mA
1 20-0 20-0 mA
2 4-20.tr 4-20 mA trip on loss
3 20-4.tr 20-4 mA trip on loss
4 4-20 4-20 mA no action on loss
5 20-4 20-4 mA no action on loss
6 Volt Voltage
In 4-20 mA and 20-4 mA modes loss of input is detected if the current falls below 3 mA.
If both analog inputs (A1 and A2) are to be set-up as voltage inputs, and if the
potentiometers are supplied from the drive's +10 V rail (terminal T4), they must have a
resistance >4 kΩ each.
17 Bipolar Reference Enable
RW Bit US
OL
Ú
Off (0) or On (1)
Ö
Off (0)
RFC-A
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