EASZ-2 Manual v1.12 - 12.2.2018 Page 15 / 30
4.8. Detailed Connection Diagrams
The EASZ-2 can be connected just as a stand-alone unit or with several options for remote
communication. In addition a local output is available to drive an external device such as an acoustic or
visual alarm or send a signal for example to an actuator.
4.8.1. Power Supply Only
This option is used when the unit is local with no remote communication. The power supply can be
connected as a single supply to the “Power” terminals or as a through connection to another unit using 2-
core cable. Set the DIP switches correctly.
Note: the backlight works correctly
if the supply < 18 Vdc
Loop: PASSIVE
Termination: OFF
Modbus: 1
In addition the “Open Collector” connection can be used for local signalling.
4.8.2. Open Collector Connection
Connect the power supply to the “Power” terminals and the “Open” “+” and “-” terminal as follows and
then set the DIP switches correctly.
Open Collector (relay, alarm or actuator)
Can also be used in
conjunction with
current loop or
RS485 Modbus
Loop: PASSIVE
Termination: OFF
Modbus: 1
The output is only “off” or “on” and can be used to drive an external device such as an acoustic or visual
alarm or send a signal for example to an actuator or a sampling system to take samples in abnormal oil
conditions. The output depends on the selected alarm state and is configured in the software.
Consult EESIFLO if you require automatic sampling options.
GND
B
A
OUT
IN
- +-
POWER RS 485 LOOP OPEN
+
+
11...28 Vdc
=
GND
B
A
OUT
IN
- +-
POWER RS 485 LOOP OPEN
+
+
11...28 Vdc
=
+
=
11...28 Vdc
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