Badger Meter SRD/SRI Valve Positioners - Manual (Page 21)

Position Feedback 4…20 mA and Alarm
Code F with Electrical Classification ATEX
Code Q with Electrical Classification FM/CSA
• Stroke / angle derived from positioner feedback
• 1 output analog, galvanically separated, two-wire system
according to DIN 19234, for external supply
• 0 % and 100 % configurable
Supply Voltage 8…36V DC 1) 2)
Signal Range 3 8…20 5 mA
Device Fault < 50 μA
Terminals for AI1 C: 31+ D: 32–
Feedback Signal Can be reversed (20 --> 4 mA)
One binary alarm output, galvanically separated, two-wire
system, according to DIN 19234, for external supply
Supply Voltage External, 8…36V DC 1) 2)
Logic No alarm < 1mA
Alarm >3 mA
Device fault < 50 μA
Configurable as switch output:
Limit Value Not
Exceeded
< 50 μA
Limit Value
Exceeded
> 20 mA/20 V / > 40 mA/10 V
(power derated)
Terminals for AB1 3) A: 81+ B: 82–
1) Other values in hazardous areas
2) On request we can specify higher voltage limits
3) Terminals 81 and 82 are marked as Terminals 21 and 22 in certificate of conformity
The binary output for Alarm will be activated in the
following cases:
• Remaining control deviation
• Circuit to I/P module is disturbed
• Circuit to potentiometer is disturbed
• Calibration error:
◊ No angle calibration
◊ No current calibration
◊ Autostart failed
These pre-settings can be configured via communication
with the Alarm Link function in the DTM
One module “Additional inputs / outputs” 8 can be plugged
onto main electronics 40:
• 2 binary inputs or
• 2 binary outputs or
• 2 binary in/outputs or
• Position feedback and alarm
DTM Configuration Window
Electrical Classification ATEX
• For types of protection and temperature classes as basic
device, see page 13
• Additions for this option, Type AI 638 Q, in EC – Certificate
of Conformity PTB 00 ATEX 2128:
◊ For use in hazardous areas in circuits certified
as intrinsically safe with the maximum values
as described in the Certificate of Conformity, 5
Supplement
◊ The electric circuits of Position Feedback 4…20 mA
are galvanically separated from all other circuits and
from earth
Additional Equipment
Page 21 August 2014 POS-UM-00223-EN-02