User Manual

Logical I/O blocks
Slope [Slpe] and Intercept [Icpt]
19
CM110664en_07 277 | 353
Power surges on U10 inputs
The U10 inputs are designed for DC 0 ... 10 V with a narrower high / low
tolerance range. The input reports an error when a value is stored that outside
this range. A transient voltage suppressor can prevent an error message. A
faulty response from the analog signal supplied by the automation station can
no longer be detected.
Solution examples:
Zener diode Voltage divider
Active setpoint adjuster
BSG61 (Datasheet
CE1N1992)
Slope must be adapted
to 0...5 V (0.01 -> 0.005)
Precision resistance,
e.g., VISHAI MBB/SMA
0207
Switch position 1
(Setpoint limit control)
Setpoint 100%
[Icpt] and [Slpe] for BT devices
The physical inputs are designed for 0 -10V with narrow high and low tolerance
limits. If a value falls outside this range, the input transmits an error signal.
However, provided it is established that the peripheral devices are in order, an
error signal can be prevented by using a transient voltage suppressor (10 V
Zener diode and two resistors). A faulty response from the analog input signal
supplied cannot subsequently be detected in the automation station.
Example of a circuit including the QAF64 which transmits more than 10
volts
10563A22
U10
U10
0 ... 5 V
U10
BSG61
Note for all U10 inputs