Owner manual

Piping Connection With Actuator
Series 185 and Series 285 can operate either single or double acting actuators.
S
ingle Acting Actuator
T
o operate a single acting actuator, connect OUT1 port to actuator supply pressure
p
ort. Close off the OUT2 port with the supplied 1/4˝ NPT plug.
D
ouble Acting Actuator
F
or the Series 185 and 285 double acting types, OUT1 and OUT2 ports are used.
Power Connection
T
erminal Connection of Current Input Signal
1. Open cover by loosening the four M4 bolts on positioner cover.
2. Loosen locking bolts of terminal plate.
3. Insert a cable through the cable connector in the positioner.
4
. Use a ring type cable terminal so that it does not come out.
5
. Insert terminal bolts in terminal holes of cable and lock them with (+) terminal and
(
-) terminals on the terminal plate. Tighten terminal bolts with 1.1 lb-ft (15 kfgcm) of
torque.
6. Be sure not to change the polarity of the terminals.
Terminal Connection of Feedback Signal
1
. Open cover by loosening the four screws on positioner cover.
2. Loosen locking bolts of terminal plate.
3. Insert a cable through the cable connector in the positioner.
4
. Use a ring type cable terminal so that it does not come out.
5
. Insert terminal bolts in terminal holes of cable and lock them with (+) terminal and
(
-) terminals on the terminal plate. Tighten terminal bolts with 1.1 lb-ft (15 kfgcm) of
torque.
6. Be sure not to change the polarity of the terminals.
Inner Terminal Connection to Ground
1. The ground is necessary for the safety of the positioner and system.
2. The ground terminals are inside the terminal in the center of the terminal plate and
outside terminal beside outer cable entry. Use any ground terminal that is available.
Resistance must be less than 100 Ω.
Ground Terminal Connection
3. For use with inside ground, open cover by loosening the four screws of positioner
cover.
4. In order to maintain the ground connection, use a ring type ground cable terminal
to prevent it from coming out.
Variable Orifice
Hunting can occur if the actuator volume is too small. In this case, adjust the variable
orifice using a (-) flathead screwdriver. Hunting is prevented by reducing the flow rate
of supply pressure transmitted to the actuator.
LCD SCREEN
SMART POSITIONER
L
CD SCREEN
SMART POSITIONER
Piping Connection Example of Series 185 with Double Acting Actuator
Piping Connection Example of Series 285 with Double Acting Actuator
T
erminal Plate of Series 185 and 285
Maximum Open
Minimum Open
1. Before connecting terminal, power must be shut off.
2. Use ring type terminal against oscillation, impact, etc.
3. Series 185 and 285 positioners use 4 to 20 mA DC for power. Minimum supply
current is 3.8 mA for all models. Maximum supply current must not exceed 24 mA.
4. In order to protect the Smart Positioner, the ground terminals should be
grounded.
5. Use twisted cable with conductor sectional area at least 0.0019 in
2
(1.25 mm
2
),
and suitable for 600 V as on conductor table of NEC Article 310. Outer diameter
of cable should be .25˝ to .39˝ (6.35 to 10 mm). Use shielded wire against
electromagnetic waves and noise.
6. Do not install the cable near equipment such as a high-capacity transformer or
motor.
CAUTION