Instruction Manual
D103531X012
L2e Controller
June 2022
7
Wiring Configurations
There are two recommended wiring configurations depending on the preferred site solution and approach to electric
level control; a direct connection to the easy-Drive actuator, shown in figure 3 or a direct connection to the easy-Drive
actuator and a remote monitor (figure 4 and 5). In these examples, the L2e is wired using a common and separate N/O
or N/C contact. When implemented as suggested, these wiring configurations provide definitive level switch points
and help reduce issues associated with single pole single throw contact switches, such as “bouncing” due to vibration
or sloshing liquids in a vessel.
Note
The wiring diagrams shown are for “sourcing”-type digital input cards.
“Sinking”-type digital input cards should not be wired to the L2e switch terminals in parallel with the easy-Drive input terminals as
they will be unintentionally and constantly activated by the easy-Drive “sourcing”-type input circuits.
If a PLC with sinking digital input cards is used, the easy-Drive input terminals need to be driven by a digital output card on that PLC
and the PLC must control those digital outputs by its logic program after reading its digital inputs. This will introduce additional
delay into the response to the input, modifying the dynamic differential gap achieved by the controller.
CLOSE
OPEN
Figure 3. Local Level Control with Direct Connection to easy-Drive Actuator without Remote Monitor
BROWN
BLUE
RED
12/24 VDC
POWER SUPPLY
easy-Drive ACTUATOR
POWER AND CONTROL TERMINAL
X0661
1
GREEN (GND)
1 CONNECT GREEN WIRE TO ACTUATOR GROUND (NOT SHOWN)
2 OPEN CONTACT (2) MAY BE LABELED N.O. AND CLOSE CONTACT (3) MAY BE LABLED N.C.
2
W9795-4
REMOVE COVER TO
ACCESS POWER AND
CONTROL TERMINAL
easy-Drive ACTUATOR WITH
FISHER D3 CONTROL VALVE
WHITE/RED
WHITE/BLACK
