EX200 Electro-Hydraulic Actuator Positioner
Bifold Orange Limited.
Drwg. No.: ORM0001 Issue : 1 Date : 24/06/2015 Page :
3 of 20
Features
Simple two-step calibration
4-20mA current command signals and current or potentiometer feedback signal.
Actual position 4-20ma calibrated output
MANUAL mode
Stepping mode with adjustable ON and OFF times
Selectable solenoid drive sense for failsafe operation
Selectable default operation on command signal/feedback signal break
Auxiliary solenoid output - 24Vdc open drain
Fault output - 24Vdc open drain
Hydraulic pump drive controlled by demand or external pressure sensors
External fault contact monitoring
Selectable interlock between auxiliary solenoid and fault outputs
Low power - normal operation less than 1.5W
Available in a DIN rail mounted enclosure
Available in the EXD2010 Ex d enclosure system for direct mounting in Zone 1 or Zone 2
HART communications
– optional available in Din rail enclosure and Ex d enclosure
Optional AC system supply, instrument and solenoids 115V
– 230V 50/60Hz in Ex d enclosure selection
The EX200 can be used in any positioning system relying on the on-off control of the position driver including electro-
hydraulic actuators and reversing ac motors (with the addition of suitable relays, contactors or motor control equipment).
The EX200 can accept positional feedback from a three wire potentiometer or a position transducer with a current output.
All signals and power supplies are referenced to power supply zero ensuring safe connection to centralised digital control
systems (DCS).
The EX200 can be housed in a din rail mount enclosure, either as a standard back-panel instrument or within an Exd
enclosure when required to operate with a hazardous area.
The EX200 can also be mounted to a special chassis plate and fitted within an Ex d enclosure certified by Bifold
– the
EXD2010 enclosure. All field and customer wiring is then taken through a close-coupled Exe enclosure.
When housed in the EXD2010 Ex d enclosure an option is available for an AC powered unit, fitted with a 36W AC-DC
converter capable of powering the instrument and control solenoids from an AC supply 115V
– 230V 50/60Hz.
The EX200/H option has a HART communications modem on the actual position output retransmission, compatible with
Version 6. This gives access to the Primary Variable (actual position), the Secondary Variable (desired position) and a
number of private commands to assist in the configuration of the positioner.
