ABB ScreenMaster RVG200 Manual page 7

S C R E E N M A S T E R R V G 2 0 0 / PA P E R L E S S R E C O R D E R | C I/ R V G 2 0 0/0 0 1 - E N R E V. A
Analog input / relay / hybrid connections
IMPORTANT (NOTE)
• Tighten terminal screws to a torque of 0.1 Nm (0.9 lbf.in).
• Analog inputs:
– 3-Lead RTD: 3-leads must have equal resistance, not exceeding 20 W each
– for mA input types, to ensure loop continuity when the recorder is switched off, fit a suitably-rated diode
(for example, type 1N4148 or equivalent)
Inputs 1 to 6
Input 1
Input 2
Input 3
*
Input 4
Input 5
+
Input 6
*Each thermocouple input must have either a cold junction assembly (part number CM30/0052) or shorting link (part number
RVG200/0118) fitted. Each analog input card with a thermocouple input must have a minimum of 1 cold junction assembly fitted.
Cold junction
Figure 5 Analog input / relay / hybrid connections
Connecting a 2-lead temperature transmitter
24 V DC
2-wire
Current limited + +
transmitter
to 22.8 mA
maximum
_
Using an external 24 V power supply
* In the powered-down condition the current input is open circuit. In order to maintain a current loop when the
recorder is powered down, fit a zener diode (BZX79 – B/C2V4) to the input as shown.
Figure 6 Connecting a 2-wire temperature transmitter
A, B, C, D
A, B, C, D
Analog Input Relay
1
N/C
N/O
2
C
3
4
N/C
N/O
5
C
6
N/C
7
N/O
8
C
9
10
N/C
N/O
11
C
12
13 N/C
N/O
14
C
15
16
N/C
N/O
17
C
18
A, B, C, D
Analog input
Input 1
_
C, D
Hybrid
1
1
2
3
2
4
5
3
6
7
4
8
9
5
10 10
11
11
6
12 12
13 1+ 13
14 14
2+
15 15
3+
16 4+ 16
17 5+ 17
18 Common 18
Analog
1
input
2
+
3
1
Input 1
2
3
4
Using an internal Tx power supply or hybrid board
E
Power supply
L
1 1
2 N 2
3 3
4 4
+
5 – 5
6 6
7 7
8 8
9 9
Tx
+
10
Tx
–
Tx / Rx
+ 11
Tx / Rx
12
–
Communications
13
common
RJ45
USB
2-wire
_
+
transmitter
Analog or digital output 1
Tx PSU 1
Analog or digital output 2
Tx PSU 2
7
100 to
240 V AC
24 V
DC
Hybrid
+
1
_
2
3
4