1.4.3
Electronics
Table 1-3: Electronics
Power supply
SPDT
DPDT
FSH/
FSL
Output
delay
Fail safe
alarm
Ac
version
24 or 48 Vac or
115 or 230 Vac
*
-
-
-
-
Dc
version
24 Vdc
*
-
-
-
-
Universal
voltage
24 Vdc /
22 .. 230 Vac
-
*
*
*
option
(1)
Single-Pole-Double-Throw contacts.
(2)
Double-Pole-Double-Throw contacts.
(3)
Selectable Fail Safe High or Fail Safe Low alarm output. See
Jumper Settings for Fail Safe High or Low
(4)
Adjustable time delay for the switched outputs.
Switched signal output
The ac-voltage or dc-voltage versions of the level switch output a 'covered
paddle' or 'uncovered paddle' status signal through SPDT relay contacts.
Wiring the ac and dc voltage versions
for details.
The universal-voltage version of the level switch outputs a 'covered paddle'
or 'uncovered paddle' status signal through DPDT relay contacts.
Wiring the universal voltage version
for details.
When using the universal-voltage version of the level switch, there is an
adjustable delay for the switched signal output. Setting a delay helps to
prevent false switching of the output when there is movement of the bulk
material in a silo (or other vessel). See
for details.
Fail safe alarm
The fail-safe alarm option makes it possible for the level switch to indicate a
fault using the alarm relay.
The following faults are indicated:
•
Motor failure
•
Gear failure
•
Electronics failure (for motor power supply)
•
Supply voltage failure
•
Terminal wiring defect
Quick Start Guide
October 2019
10
Quick Start Guide
