ABB PositionMaster EDP300 Commissioning Instruction page 20
Digital positioner
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Also See for PositionMaster EDP300:
- Operating instruction (88 pages) ,
- Manual (52 pages) ,
- Instruction (8 pages)
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Option modules
Module for analog feedback AO
Without signal from the positioner (e. g. "no power" or
"initializing") the module sets the output to > 20 mA (alarm
level).
Terminals
+31 / -32
Signal range
4 ... 20 mA (configurable split ranges)
Supply voltage, two-wire
24 V DC (10 ... 30 V DC)
technology
Characteristic curve
rising or falling (configurable)
Characteristic curve
< 1 %
deviation
Module for digital feedback SW1, SW2
Two switches for digital position feedback (position adjustable
within the range of 0 ... 100 %, ranges cannot overlap)
Terminals
+41 / -42, +51 / -52
Supply voltage
5 ... 11 V DC
(Control circuit to DIN 19234/NAMUR)
Signal current
< 1,2 mA: Switching state logical "0"
> 2,1 mA: Switching state logical "1"
Direction of action
standard logical "0" or logical "1"
(configurable)
Module for universal input UAI
Module for a 4 ... 20 mA input for universal use.
The range can be scaled. It is used for advanced valve
diagnostics. For example, an ultrasonic sensor can be
connected to detect a faulty valve seat or a phonometer can
be connected to detect cavitation.
The limit values for detecting up-scaling can be freely
selected.
Terminals
+21 / -22
Nominal operating range
4 ... 20 mA
Load voltage
8 V at 20 mA
Impedance
400 Ω at 20 mA
Change from two to one column
20 CI/EDP300-EN Rev. C | PositionMaster EDP300
1)
1)
1)
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 / -86
Supply voltage
24 V DC (20 ... 30 V DC)
(electrically isolated from the input signal)
Safe position
Active at < 5 V DC
1) 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 / -42, +51 / -52
Supply voltage
5 ... 11 V DC
(Control circuit in accordance with DIN
19234/NAMUR)
Output "logical 0"
< 1.2 mA
Output "logical 1"
> 2.1 mA
Switching point
Adjustable between 0 ... 100 %
Direction of action
Metal tag in proximity
switch
Type SJ2-SN (NC; log.
< 1.2 mA
1)
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
1)
Metal tag outside
proximity switch
> 2.1 mA
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