Operating Instructions

SED2 VFD Operation & Maintenance Manual
46 Siemens Building Technologies, Inc.
2
3
4
VFD 24V dc POWERED 0-20 mA DEVICE
28
9
mA
Power
(Power consumption cannot exceed 100 mA)
SPEED POTENTIOMETER
1
2
3
10
11
AIN1+
4
Minimum
4.7k
Ω
AIN1-
AIN2+
AIN2-
5192Z19
+10 V
0 V
A/D
A/D
2
3
4
EXTERNAL 0-20 mA
3
2
-
+
EXTERNAL 0-10V
Figure 29. SED2 Analog Inputs 1 and 2.
Parameter Settings for AIN1 and AIN2 (Commissioning)
P0756, Type of analog input
P0756 defines the type of analog input and enables analog input monitoring. Possible
settings:
0 Unipolar voltage input (0 to 10V) (factory setting).
1 Unipolar voltage input with monitoring (0 to 10V).
2 Unipolar current input (0 to 20 mA).
3 Unipolar current input with monitoring (0 to 20 mA).
5 Ni 1000 sensor input (–10 to +10V).
NOTE: The parameter setting must match the setting of the two DIP switches on the I/O
module.