GEORGE FISCHER +GF+ SIGNET 9020 Intelek-Pro, Instruction Manual

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7
2.4 Output Relay Connections
Two 5 A output relays are available in the 9020.
Relay 1 is dedicated to
on/off control . It is
energized at the start of a batch and de-energized
at the end of a batch. The relay also de-energizes
when the STOP key is pressed, and re-energizes
when the RESUME key is pressed.
Figure 5
Basic on/off relay
connections
Relay 2 can be assigned two operating modes
through the Batch menu (see sec. 3.7).
Two-stage shutdown is designed to prevent
overfilling in tank applications. Relay 2 is ener-
gized at the start of a batch and de-energized
when a selected percentage of the batch is com-
plete. The STOP and RESUME keys will also
control relay 2 (Figure 6).
1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8
L
1
N
AC IN
+ GND NO C NC
RLY1 DC IN
NO C NC
RLY2
external
AC/DC
power
+
-
flow
+
-
valve
Note:
Relay contacts are rated 5 A @ 250 VAC or
5 A @ 30 VDC maximum.
Note:
to reduce the
possibility of noise interfer-
ence, separate AC relay lines
from input/output lines.