4.1.3 SST N.O. SENSOR (35S) CONTINUED
Bench test procedure and sensor setting instructions
Note When performing this procedure on a Normally Open (function
35) switch, the LEDs will turn on during the setup procedure instead of
off.
Use a 24 VDC power supply with series load resistor, (2K - 6K Ω),
connected to the 24 VDC+.
1.
Connect 24 VDC + (with resistor) to the CLOSED C (common)
and OPEN C (common) terminals. Connect 24 VDC- to the
CLOSED NO and OPEN NO terminals.
2. Attach indicator such that the closed quadrants will face out when
in the closed position. This figure shows a Red Closed visual
indicator in the closed position.
Ma
gne
t
Ma
gn
et
Ma
gne
t
Green
R
ed
G
ree
n
Re
d
3. Save set-points
a.
Operate actuator to the closed position.
b.
Press and hold SET CLOSED button until closed LED
changes state (2 seconds). Release button.
c.
Operate actuator to the open position.
d.
Press and hold SET OPEN button until the open LED
changes state (2 seconds). Release button.
NOTE: If red or green LEDs flash when trying to set the set-point,
the magnet is too far away from the sensing element. Adjust Visual
Indicator drum to bring the magnet slightly closer to the sensing unit
and try again.
4. Setpoints are retained even after power is removed.
5. To electrically test solenoid output, apply power to the SOL PWR
1 and SOL PWR 2 terminals.
Note
If using only one of the sensors for valve position feedback, either
sensor may be used independently.
Caution:
Performing this procedure will cause the
sensor inputs to change state. Performing this procedure
is not recommended during a live process.
15
EC70EN - 6/2022 | Stonel product publication 105509revA
