GEORGE FISCHER SIGNET 9030 Intelek-Pro, Инструкция по эксплуатации

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8
2.5 Dual Proportional Relay Connections
The Dual Proportional Relay Card provides two
relays (3 and 4) for external device control.
Proportional or alarm operation is selectable
during calibration. Both relays MUST be like
configured, meaning one relay cannot be selected
for proportional operation while the other is
selected for alarm operation.
If alarm operation is selected, relays 3 and 4
operate as on/off controls similar to relays 1 and
2. The main distinction is the lack of the normally
closed (NC) contact. Refer to Figure 5 pg# 7 for
further instructions.
If proportional operation is selected, relays 3 and
4 are configured to provide a varying pulse rate to
control metering pumps. Relay 3 is dedicated to
low range control and relay 4 to high range
control.
Figure 6
Proportional Control Wiring
Note:
Relay contacts are
rated as 5A @ 250 VAC or
5A @ 30 VDC maximum
resistive load.
To reduce the possibility of
noise interference, separate
AC relay lines from input/
output lines.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
C NO
RLY3 RLY4 SERIAL
Tx GND Rx
PRE-AMP
V+ V- T+ Ain ISO
INPUT
C NO
ANL2
R+ R-
Trig. A
Trig. A
-
+
+
-
Metering
Pump A
Trig. B
Trig. B
-
+
+
-
Metering
Pump B
External
AC/DC
Power
Source
External
AC/DC
Power
Source