YOKOGAWA SC150, Инструкция по эксплуатации, Страница: 14 / 58

IM 12D7B4-E-H
8
Connection Diagram
High Voltage Signals
mA Outputs
Power
Supply
Relay
Contacts
Sensor Input
Contact Input
POWER SUPPLY OUTPUTS
100-240VAC/10VA
CONTACTS
INPUTS
SEE MANUAL
NC
C
NO
NC
C
NO
S1
S2
240V/5A AC/DC
Temp
mA1
mA2
Shield
HIGH VOLTAGE
L
N
1
2
3
41
42
43
+
-
11
12
13
14
15
16
21
22
+
-
+
-
61
62
65
66
63
100VA/50W
31
32
33
Figure 3-9. General connections Conductivity and Resistivity measurement
3-7. Wiring the Current Outputs
The current outputs should be connected using twisted pair signal cable. The screen
(shield) should be connected to ground (at one end only).
Note: The HART signal is super imposed on mA 1. When using this signal, attention should
be paid to the load resistance. In some cases a separate load resistor will be needed,
across which the HART signal can be read. In this case a 250 Ohm resistor should be
used.
Caution - Risk of electric shock
See section 3.7 and 3.8 for correct wiring