UM-0090-B1E
DT90 Range User Manual
Page 24
RG
Current Inputs (A1
– A2)
There are 2 wiring methods for current channels depending on voltage source:
-
Voltage source taken from the logger (Vout) with 2 possible connections:
o
pin 2 for
Vout
with pin 3 for
Iin
o
pin 6 for
Vout
with pin 7 for
Iin
Figure 27: Current Channels
– Internal Supply Wiring Configuration
-
Voltage source from external with 2 possible connection
o
pin 1 for
Gnd
with pin 3 for
Iin
o
pin 1 for
Gnd
with pin 7 for
Iin
Figure 28: Current Channels
– External Supply Wiring Configuration
RTD Inputs (A3
– A4)
RTD channel will read 3 wire PT100 and there are 2 possible connections:
-
pin 3 + 4 on one lead and pin 1 on other lead
-
pin 6 + 7 on one lead and pin 1 on other lead
Figure 29: RTD Channels
– Wiring Configuration
Digital/ Serial Input Connectors (D1
– D2)
Counter Inputs (D1)
Counter inputs use 6 pin connector with a total 3 connected sensors.
Figure 30: 6-pin Digital Inputs Connector
These counter inputs rely on impulse signal in which transient change of signal amplitude occurs. However it may be
used to read dry contact signal (i.e: reed contact) as long as external voltage is applied to generate the impulse signal.
Pin
Function
1
Gnd
2
Vout 12V
3
Vout 5V
4
Counter 1
5
Counter 2
6
Counter 3
PE
2
3
6
7
+
+
1
2
3
4
5
6
3
1
6
1
4
7
1
3
1
7
+
+
Ext
12-24V
Ext
12-24V
