Operating instructions

Adapting the terminal strip
5.4 Analog inputs
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
90 Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
In addition, you must also set the switch belonging to the analog
input. You will find
• the DIP switch for AI0 and AI1 (current / voltage) on the Control
Unit behind the lower front door.
,8
$,
$,
• the DIP switch for AI2 (temperature / current) on the Control Unit
behind the upper front door.
$,
7HPS,
If you change the analog input type using p0756, then the inverter automatically selects the
appropriate scaling of the analog input. The linear scaling characteristic is defined using two
points (p0757, p0758) and (p0759, p0760). Parameters p0757 … p0760 are assigned to an
analog input via their index, e.g. parameters p0757[0] … p0760[0] belong to analog input 0.
9ROWDJHLQSXW99 &XUUHQWLQSXWP$P$
S  S 
[ 
S
\ 
S
[ 
S
\ 
S
P$

[ 
S

\ 
S
[ 
S
\ 
S
9

Figure 5-2 Examples for scaling characteristics
Table 5- 5 Parameters for the scaling characteristic and wire break monitoring
Parameter Description
p0757 x-coordinate of 1st characteristic point [V or mA]
p0758 y coordinate of the 1st characteristic point [% of p200x]
p200x are the parameters of the reference variables, e.g. p2000 is the reference speed.
p0759 x-coordinate of 2nd characteristic point [V or mA]
p0760 y-coordinate of 2nd characteristic point [% of p200x]
p0761 Wire breakage monitoring response threshold