EX200 Electro-Hydraulic Actuator Positioner
Bifold Orange Limited.
Drwg. No.: ORM0001 Issue : 1 Date : 24/06/2015 Page :
7 of 20
1. Hold in the MANUAL pushbutton and apply power to the positioner.
2. The MANUAL LED will light continuously and the DECREASE / INCREASE LED will show the current, balanced,
state of the actuator.
3. Pressing the manual DECREASE and INCREASE pushbuttons will cause the appropriate DECREASE and
INCREASE LEDS to “toggle” on and off.
4. Select a pattern of LEDs to show the desired fail state. This will depend on the link-configured solenoid sense:
For double-acting systems,
No LEDs = Freeze on fail, DEC LED ON = Drive close on fail, INC LED ON = Drive open on fail
For spring to close systems (DEC solenoid energised at balance)
DEC LED ON = Freeze on fail, No LEDs = Drive close on fail, INC & DEC LED ON = Drive open on fail
For spring to open systems (INC solenoid energised at balance)
INC LED ON = Freeze on fail, INC & DEC LED ON = Drive close on fail, No LEDs = Drive open on fail
5. When satisfied press the MANUAL pushbutton again.
6. Remove power from the positioner.
The default EX200 supply is for fail freeze, to select a factory set unit for fail close please add “FC” where indicated in the
part number selection chart, and for fail open add
“FO”.
Setting the auxiliary solenoid and fault output interlock
The external fault input is by default set to trigger the auxiliary solenoid, the fault output and actuator default mode. The
EX200 can be set so that the auxiliary solenoid reacts to control signal breaks in the EX200 and the fault output reacts to
a change in state of the external fault input.
For the EX200 with “Standard” Communication option follow the procedure described in Positioner set-up above and
select from position D on link block LK1 as follows:
D
Function
Out
External fault only triggers fault output
In
External fault triggers fault output, auxiliary solenoid output and instrument default mode
For the EX200 with “Hart” Communication option this is changed via HART in Command 129 (81h),
Setting the self-contained pump control options
The EX200 has an output to control a hydraulic pump supplying power to the actuator. The pump can be configured to
operate on demand, when a change in the control signal requires the actuator to move, or under the control of low and
high pressure switches in the hydraulic circuit.
For the EX200 with “Standard” Communication option follow the procedure described in Positioner set-up above and
select from position C on link block LK1 as follows:
C
Function
Out
Pump output operates on demand with a 5 second run-on after demand ceases
In
Pump output operates when hydraulic pressure falls below the Low Level switch setting and
switches off when the pressure exceeds the High Pressure switch setting.
For the EX200 with
“Hart” Communication follow the procedure described in Positioner set-up above and select from link
block LKA as follows:
A
Function
Out
Pump output operates on demand with a 5 second run-on after demand ceases
In
Pump output operates when hydraulic pressure falls below the Low Level switch setting and
switches off when the pressure exceeds the High Pressure switch setting.
The default EX200 supply is for no pump control, to select a factory set unit for pump control on demand please add “PD”
where indic
ated in the part number selection chart, and for pump control via pressure switches add “PP”.
Setting the stepping option timers
The stepping mode operation is set on the front panel DIL switches but the initial setting should be done prior to first use.
If stepping operation is required, the ON and OFF timers for the open and close solenoids have to be set. This operation
is best performed when the actuator hydraulics are isolated but the settings can be trimmed during normal operation of
the system.
