3.8 Measured Data Input (Function Group MEASI)
When the P634 is equipped with the analog (I/O) module Y it has two analog
inputs available for measured data input. Direct current is fed to the P634
through the 20 mA analog input (input channel 1). The other input is designed for
connection of a PT 100 resistance thermometer.
The input current I
DC
present at the analog (I/O) module Y is displayed as a
measured operating value. The current that is conditioned for monitoring
purposes (I
DC,lin
) is also displayed as a measured operating value. In addition, it is
monitored by the Limit Value Monitoring function to detect whether it exceeds or
falls below set thresholds (see Section 3.32, (p. 3-213)).
The measured temperature is also displayed as measured operating value and
monitored by the Limit Value Monitoring function to determine whether it
exceeds or falls below set threshold (see Section 3.32, (p. 3-213)).
All measured variables are also forwarded to the Thermal Overload Protection
function. With this protection it is possible to set whether the PT 100 resistance
thermometer or the 20 mA analog input is to be used for the thermal replica (see
Section 3.25.1, (p. 3-174)).
Disabling or Enabling the Measured Data Input Function
The Measured Data Input function can be disabled or enabled via setting
parameters.
S8Z52H1A
MEASI:
General enable USER
[ 011 100 ]
MEASI:
Enabled
[ 035 008 ]
1: Yes
0
1
0: No
Fig. 3-23: Disabling or enabling the measured data input function.
3 Operation P634
P634/EN M/R-42-A // P634‑311‑653 3-39
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