Badger Meter SRD/SRI Valve Positioners - Manual (Page 51)

Binary Input
The Binary Input is used for externally operating two independent
binary switches . These switches are connected to the two inputs which
are supplied by the basic device . The binary inputs can be used for
diagnostics or also configurable for the control functions . The enclosed
table shows the control functions of the switches .
Switch 1 Switch 2 Actuator Control Function
close close normal operation
open close go to top at 0%
close open go to stop at 100%
open open hold last position
Configure Binary Input Signal
Both switches need to be closed (bridged) for normal operation . If one of each switch is opened, the positioner will move to
one designated valve position . If both switches are open (not bridged), the positioner will Hold Last Value .
Input 1 Active
There are two functions that can be activated for the Binary Input .
If the function Goto 0% is activated and the binary contact is operated, the valve will move to the 0% valve position . If the
function Set Status Binary Input is activated and the binary contact is operated, a status bit will be execute and displayed
under Process/Binary Input .
Both functions can be activated separately or together .
The operation of the Binary Input ignores travel limits and is predominate to the setpoint signal .
Input 2 Active
There are two functions that can be activated for the Binary Input .
If the function Goto 100% is activated and the binary contact is operated, the valve will move to the 100% valve position . If
the function Set Status Binary Input is activated and the binary contact is operated, a status bit will be execute and displayed
under Process/Binary Input .
Both functions can be activated separately or together .
The operation of the Binary Input ignores travel limits and is predominate to the setpoint signal .
Input 1 Active and Input 2 Active
There are two functions that can be activated for each Binary Input .
If the function Goto 0% and Goto 100% is activated and the binary contact is operated, the valve will Hold Last Value of the
valve position . If the function Set Status Binary Input is activated and the binary contacts are operated, a status bit will be
execute and displayed under Process/Binary Input .
Both functions for each switch can be activated separately or together .
The operation of the Binary Input ignores travel limits and is predominate to the setpoint signal .
Binary Input
The value Binary Input allows defining the kind of contact used for activating these actions or the alarm . The Binary Input can
be used as a Limit Switch for protection against overflow of tanks or for an emergency operation to close the valve .
Message Status Description / Explanation Recommended Action
Binary Input (Freely definable) INFO An external mechanical switch
has activated the Binary Input .
Depending on the reason for
activating switches
Configuration / Parameter
Page 51 August 2014 POS-UM-00011-EN-02