ABB PositionMaster EDP300 - Module for the Emergency Shutdown Function*; Limit Switch

PositionMaster EDP300 DIGITAL POSITIONER | OI/EDP300-EN REV. D 27
Module for the emergency shutdown function*
When the 24 V DC signal is interrupted, the I/P module executes
the respective safety function, depending on the mechanical
construction.
The positioner output 1 is depressurized, and the valve is moved
to the safe position. In case of a double-acting actuator, output
2 is additionally pressurized.
The emergency shutdown module works independently of the
mother board, i.e., all information from the final control element
is available in the control system at any time.
Terminals +85 / Æ86
Supply voltage 24 V DC (20 to 30 V DC)
(electrically isolated from the input signal)
Safe position Active at < 5 V DC
* There are two slots for the option modules. Any combination of different
option modules is possible. However, identical option modules cannot be
combined.
Limit switch
The limit switch can either be equipped with proximity switches
or with potential-free microswitches.
Limit switch Limit 1 / Limit 2 with proximity switches
Two proximity switches for independent position signaling.
Terminals +41 / Æ42, +51 / Æ52
Supply voltage 5 to 11 V DC
(Control circuit in accordance with DIN
19234/NAMUR)
Output ‘logical 0’ < 1.2 m
A
Output ‘logical 1’ > 2.1 m
A
Switching point Adjustable between 0 and 100 %
Direction of action Metal tag in proximity
switch
Metal tag outside
proximity switch
Type SJ2-SN (NC; log. 1) < 1.2 mA > 2.1 m
A
Limit switch Limit 1 / Limit 2 with 24 V - microswitches
Terminals 41 / 42 / 43, 51 / 52 / 53
Supply voltage maximum 24 V AC/DC
Load rating Maximum 2 A
Change from two to one column