51
Electrical installation
Type 8792, 8793 REV.2
12.2.3.1.
Terminal assignments of the process actual value input
Input type*
Terminal Assignment
On the device side
External circuit
4...20 mA
- internally
supplied
actual value
1
+24 V input transmitter
1
2
3
GND
Transmitter
GND
2
Output from transmitter
3
Bridge after GND (GND terminal
from operating voltage)
4
Not assigned
GND
GND from operating voltage
4...20 mA
- externally
supplied
actual value
1
Not assigned
2
Process
2
+ (4...20 mA)
3
Process actual –
3
GND 4...20 mA
4
Not assigned
Frequency
-internally
supplied
actual value
1
+24 V sensor power supply
1
+24 V
2
Clock input +
2
Clock +
3
Not assigned
4
Clock input –
4
GND
GND from operating voltage
GND
Clock – (GND)
Frequency
- externally
supplied
actual value
1
Not assigned
2
Clock input +
2
Clock +
3
Not assigned
4
Clock input –
4
Clock –
Pt 100
(see information
below)
actual value
1
Not assigned
2
3
4
Pt 100
2
Process actual 1 (power supply)
3
Process actual 3 (GND)
4
Process actual 2 (compensation)
*Can be adjusted via software (see chapter “21. Start-up sequence”).
Table 22:
Terminal assignments of the process actual value input
For reasons of wire compensation connect the Pt 100 sensor via 3 wires.
Always bridge Terminal 3 and Terminal 4 on the sensor.
When the operating voltage is applied, the process controller is operating.
→
Now make the required basic settings and actuate the automatic adjustment of the process controller.
The procedure is described in chapter “14 Start-up” on page 64.
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