Badger Meter SRD/SRI Valve Positioners - Manual (Page 16)

ADDITIONAL EQUIPMENT (continued)
Additional Inputs / Outputs, built into any SRD960 -B or C
Order in Model Code: SRD960– B Order in Model Code: SRD960– E
Two Binary Contact Inputs [item
1
]
Two independent binary inputs, supplied by the basic
device, for connection of sensors. A connected switch is
loaded with 3 V, 150
µA.
Both binary inputs can be used for diagnostics or also
configurable for the control functions.
Switch 1 Switch 2 Actuator control function
close close normal operation
open close go to stop at 0 %
close open go to stop at 100 %
open open hold last position
Terminals for EB1 . . . . . . . . 13+, 14–
EB2 . . . . . . . . 15+, 16–
Requirements for connected switches:
Capacitance in parallel . . . . . < 100 nF
Resistance for ON . . . . . . . . < 2 kOhms
for OFF . . . . . . . . > 10 kOhms
Hysteresis . . . . . . . . . . . . . . 2 to 5 kOhms
For application with . . . . . . . - mechanical switches
- opto couper outputs
- open collector / drain
outputs of transistor
circuits
For further informationen about the contact inputs please
consult
TI EVE0105_B .
Explosion protection thereto see “PHYSICAL
SPECIFICATIONS.”
Parts set for subsequent mounting:
Code B . . . . . . . . . . . . . . . . EW 426 346 012
Two Binary Signal Inputs/Outputs [item
1
]
Two Binary Inputs/Outputs are configure by the device as
Input or as output, as well as the kind of Signals as on/off or
as to NAMUR signal in accordance (DIN 19234).
Configured as NAMUR:
Input/Output
Logic 0. . . . . . . . . . . . . . . . . > 0.35 mA, < 1 mA
Logic 1. . . . . . . . . . . . . . . . . > 2.2 mA < 6 mA
Input current Limited to . . . . < 6 mA
On/Off Signal
Output:
Logic 0. . . . . . . . . . . . . . . . . < 50 µA
Logic 1. . . . . . . . . . . . . . . . . > 40 mA / 10 V
Input:
Logic 0. . . . . . . . . . . . . . . . . < 4 mA
Logic 1. . . . . . . . . . . . . . . . . > 6 mA
Signal Voltage Range . . . . . 6 … 36 V
Terminals for Ch1 . . . . . . . . 81+, 82–
Ch2. . . . . . . . . 83+, 84–
Part set for subsequent mounting:
Code E . . . . . . . . . . . . . . . . EW 426 247 417
POS-UM-00012-EN-02
Additional Equipment
Page 16 August 2014