Opening The Device - Phoenix Contact MCR-S-1-5-UI-DCI Betriebsanleitung

4.3.3. Opening the device

Take protective measures against
electrostatic discharge!
Using a screwdriver, the snap lock of the upper part of
the housing is unlocked on both sides. The upper part
of the housing and the electronics can now be pulled
out by approx. 3 cm.
Setting DIP switch 10 to configuration mode (DIP switch 10 to "OFF" ) switches all potentiometers to
"active".
Configuration via:
DIP switch
Software (Any DIP switch (1-9) and potentiometer setting)
4.3.4. Configuring the input current range and measuring method
(Rough setting via DIP switch)
You have the choice: True r.m.s. value or arithmetic average!
The measuring principle must be preset with DIP switch 9:
Measuring principle
True r.m.s. value
Arithmetic average
True r.m.s. value:
The true r.m.s. value of an AC current corresponds by definition to the permanent value resulting from the
momentary values of the current. This permanent value generates the same heat in an ohmic resistor as
a DC current of the same strength. True r.m.s. value simply indicates that distorted and pulsating currents
are also measured.
Arithmetic average:
The arithmetic average serves to measure DC currents or filter a DC portion from a pulsating current.
Using the arithmetic average on a symmetrical AC current would result in a measured value with the
value "0".
The arithmetic average makes it possible to make bipolar DC currents available as analog standard
signals at the output.
20
DIP Function of the DIP switches
10 Configuration via DIP switch / Programming via software
9 Input current measurement: true r.m.s. value /
8 Operating/quiescent current behaviour (only threshold value versi-
7 Threshold value exceeded / Threshold value fallen below (only
threshold value version)
6 Setting the analog output signal
5
4
3
2 Setting the input measuring range
1
AC and DC without digit sign
DC with digit sign
Arithmetic average
I
D C
W -
I - S 0
- U 6 5
1 - 5
1 4
S -
R - 2 8
M C
r . :
t . - N
A r
Fig. 2
S
A L
O V
P R
A P
/
Fig. 3
DIP 10
OFF
ON
DIP 9
OFF
ON