Out 2 sup. o ut 2 sup. o ut 2 sup. o ut 2 sup, Direct action reverse action – Dwyer 265ER User Manual
Page 3
AIR PIPING CONNECTION
Fully purge the pipe to remove foreign matter. Use a clean supply air fully
removed of humidity and dust. Use a Series AFR filter regulator to keep supply air
pressure constant. When using the double acting type as the single acting type,
blind either OUT1 or OUT2 and also remove the pressure gauge to close its
connection.
ELECTRICAL WIRING
Connect the (+) and (-) output terminals from the regulator with the (+) and (-)
input terminals, respectively, of the positioner.
- Use Cable Gland in pressure tight packing type. (Cable O.D.= 0.375˝).
- Use 1/2˝ NPT standard for conduit thread connection type. There is a
spare bolt in the terminal board.
ADJUSTMENT
Check the following prior to starting the adjustment:
• The pipeline is correctly connected with the pressure supply port and OUT1 and
OUT2 port.
• The wires are correctly connected with the (+), (-) and grounding terminals.
• The actuator and positioner are sturdily connected.
• For locking of the auto/manual changeover screw of pilot valve (fully tightened
in the clockwise direction).
• The span adjusting lever of internal feedback lever is attached to the correct
(Direct or Reverse) position.
• For correct use of the cam face (Direct or Reverse) and that flange nut is firmly
locked.
Zero Adjustment
Set input signal to the Stroke starting signal (4
mA) then turn the Zero Adjuster clockwise or
counterclockwise. In case of Spring Actuator,
check if it is set to standard pressure in Zero
Point. If not, repeat Zero adjustment.
Span Adjustment
Adjust Range Adjustment so that an Actuator
stops at 0% position of the Stroke by the 0%
applied input signal and 100% position for
100% input signal respectively. Check Zero
Point and repeat Zero Span Adjustment. 1/2
Split Range can be used by Zero and Span
Adjustment. After setting, tighten up Lock
Screw of Span adjustment.
Auto/Manual Switch
This is a Switch for changing Auto and Manual. Shipped products are set for Auto.
To use Manual operation, turn A/M Switch counterclockwise. In manual operation,
the pressure of an AFR regulator connects to Actuator. After using, return switch
to "A". Not available for Single Acting - OUT2 and Double Acting.
Seat Adjuster
No need to adjust in the field because Seat
Adjuster is to be adjusted before shipment for
balanced pressure point of output pressure.
Seat Adjuster is always used for Double-
acting. If the balanced pressure point of
output pressure needs to be changed, use
Seat Adjuster. If the sensitivity is poor
because of the actuator type of load
condition, turn the seat adjuster screw
clockwise. If hunting occurs, turn the seat
adjuster screw counterclockwise. (The
amount of turning varies by actuators. Do not
loosen the stopper screw at this time since it
is set to avoid the screw coming.)
.
SP
AR
E
Grounding
External Grounding Terminal
M4*0.7P Round Head Screw
Internal Grounding Terminal
M4*0.7P Round Head Screw
High Pressure Balance
(13.1 - 14.5 psi Ps)
Med. Pressure Balance
(7.3 psi Ps)
Low Pressure Balance
(5.8 - 7.3 psi Ps)
Ps = Sup. Pressure
00
DA
DA
RA RA
00
00
DA
DA
RA RA
00
RA RA
00
00
DA
DA
00
DA
DA
RA RA
00
SUP.
OUT 1
OUT 2
O
UT
2
SUP.
O
UT
2
SUP.
O
UT
2
SUP.
O
UT
2
SUP.
Direct Action
Reverse Action
INPUT SIGNAL
4~20 mA
SUP.
OUT1
INPUT SIGNAL
4~20 mA
SUP.
OUT 1
OUT 2
INPUT SIGNAL
4~20 mA
SUP.
OUT 2
INPUT SIGNAL
4~20 mA