Badger Meter SRD/SRI Valve Positioners - Manual (Page 38)

Figure 20:
Option “Two Binary Outputs”
Both binary outputs AB1 resp AB2 switch to high current as soon as the valve position is below resp exceeds the associated
limit value If the binary outputs AB1 resp AB2 are to be inverted (higher current no alarm, lower current alarm), the
association upper/ lower alarm have to be exchanged
Signal range 1 mA resp 5…6 mA, at fault < 50 μA
Option “Binary Inputs”
The binary inputs EB1 and EB2 for two external switches resp sensors initiate the following actions:
2)
EB1 EB2 Action 2)
closed closed IN SERVICE
open closed Position to be operated
full power to 0%
closed open Position to be operated
full power to 100 %
open open Hold last value
2) Factory setting Via communication actions may be turned off or used otherwise EB1 and EB2 can thus also be used as
diagnostics inputs
An input not used is to be short-circuited (wire bridge between + and –)
Attention: Even if opening limit or closing limit are set: these actions are superimposed, and the actuator actually moves to
0 % resp 100%
Built-in Pressure Sensors
The pressure sensors 50 are part of the electronics 40 , therefore, the electronics has to be exchanged for conversion to
this option
Disconnect electric power and air supply Remove cover and electronic unit 40
Remove, if present, the M3 bolts with sealing washers from both chimneys 52 Press in a sealing plug 51 Part No 534 346 013
into the top of each chimney 52 until the collar makes contact DO NOT GREASE!
To install an electronics unit with pressure sensors, carefully guide the tubes 50 of the pressure sensors vertically into the
sealing plugs 51 Do not twist or tilt the unit Fasten screws on the electronics unit
Options
Page 38 August 2014 POS-UM-00010-EN-03