Analog Outputs - ABB DCS 500B Description

Analog Outputs

DCS 500 Software Description
There are three analog output channels. Connections are made to
either SDCS-CON-2 or SDCS-IOB-3 boards. The first two outputs
(AO1 and AO2) are programmable, and the range of the outputs is
+10V...-10V. The third output is an armature current actual measu-
rement from the HW-circuit. For more detailed information, see
TECHNICAL DATA.
Input signal
Maximum output voltage (V)
Minimum output voltage (V)
Maximum value
Figure 9 Analog Output Function Block
Example:
If the signal SPEED ACT (12102) is used in the analog output1,
the settings are:
AO1 [IN] (201)
AO1 NOMINAL V (202)
AO1 OFFSET V (203)
AO1 NOMINAL VAL (204)
With these settings the actual speed value 20000 corresponds to
+10V output voltage.
[IN]
U =
out
NOMINAL VAL
Functional Software description
SP
AO1
201
[IN]
202
NOMINAL V
P1 10000
203
OFFSET V
P2
0
204
P3 NOMINAL VAL
20000
ST5
= 12102
= 10
= 0
= 20 000
NOMINAL V + OFFSET V
9