Badger Meter SRD/SRI Valve Positioners - Manual (Page 14)

Inductive Limit Switch ( Code T, U )
Output . . . . . . . . . . . . . . . . . 2 inductive proximity sensors
acc. to DIN 19 234 or NAMUR for connection to
switching amplifier 1)
Current consumption
vane clear . . . . . . . . . . . . > 2.2 mA
vane interposed . . . . . . . . < 1 mA
for control circuit with the following electrical values:
supply voltage . . . . . . . . . DC 8 V, R
i
approx. 1 kOhm
supply voltage range. . . . DC 5 ... 25 V (with "no Ex")
residual ripple. . . . . . . . . . < 10 % p.p.
permissible
line resistance . . . . . . . . . < 100 Ohms
Response characteristic 2) 3)
switching differential . . . . . < 1 %
switching point repeatability . . . . . < 0.2 %
Terminals for GW1. . . . . . . . 41+, 42–
GW2 . . . . . . . . 51+, 52–
Electrical Classification ATEX
of versions "T" and "U":
Types of protection and temperature classes as basic device,
see “Electrical classification.”
Additions for this option, Type AI 638 K, in EC- Certificate of
Conformity PTB 00 ATEX 2128:
Types of protection and temperature classes as basic device.
For use in hazardous areas in circuits certified as intrinsic-
ally safe with the following maximum values:
Ui= 16 V, Ii= 25 mA, Pi= 64 mW
Internal capacitance and inductance: Ci= 30 nF, Li= 100 μH
The electric circuits of "Built-in Limit Switch" are galvanically
separated from all other circuits and from earth.
Inductive Limit Switch, three-wire system
– Code R
Input . . . . . . . . . . . . . . . . . . Stroke / angle from actuator
via positioner feedback lever
Output . . . . . . . . . . . . . . . . . 2 inductive proximity sensors,
three-wire system,
LED indication,
contact, pnp 2) 4)
Supply voltage U
S
. . . . . . . . DC 10 ... 30 V
Residual ripple . . . . . . . . . . . ± 10 %, U
s
= 30 V
Switching frequency. . . . . . . 2 kHz
Constant current . . . . . . . . . 100 mA
Response characteristic 6)
Gain . . . . . . . . . . . . . . . . . continuously adjustable
from 1:1 to approx. 7:1
Switching differential . . . . . < 1 %
Switching point
repeatability. . . . . . . . . . . . < 0.2 %
Terminals for GW1. . . . . . . . 42
GW2 . . . . . . . . 52
Supply. . . . . . . 41+, 43-
1) Operating mode min. (= low) / max. (= high)
selectable by adjustment of switch vanes
2) Data measured according to VDI/VDE 2177
3) With stroke 30 mm and lever length 90 mm
Mechanical Switches (Micro Switches) Code V
(only without Ex protection)
Stroke / angle derived from positioner feedback lever
Output . . . . . . . . . . . . . . . . . 2 mechanical switches (Micro
switches) 5) 6)
Manufacturer . . . . . . . . . . . . Saia-Burgess
Type . . . . . . . . . . . . . . . . . . V4NS-C4-AC1-UL
(UL- and CSA-approved)
Parts set for subsequent mounting:
Code V . . . . . . . . . . . . . . . . EW 426 164 066
Absolute limit values
AC
of mechanical switches built into positioner:
Umax. . . . . . . . . . . . . . . . . . 130 V AC 7)
Imax . . . . . . . . . . . . . . . . . . 0.5 A (resistive Load) 7)
Imax . . . . . . . . . . . . . . . . . . 0.03 A (inductive Load) 8)
Absolute limit values DC
of mechanical switches built into positioner: 9)
Umax. . . . . . . . . . . . . . . . . . 30 V DC
Imax . . . . . . . . . . . . . . . . . . 1 A
Switching Differential:. . . . . . < 2.5 %
Terminals for SW1 . . . . . . . . 41, 42
SW2. . . . . . . . 51, 52
The circuit of the mechanical switches have to be protected
by a suitable fuse. The diameter of the protective conductor
needs to be at least 1.5 mm² / AWG 16.
5) Operating mode min. (=low) / max. (=high) selectable by adjusting the
respective vane
6) Operating mode normally open / normally closed selectable by vane
adjustment
7) Approval according to UL (UL 1054) and CSA (CSA 22.2 No. 55) at
6,000 operations and T = 65 °C / 149 °F
8) Based on EN 61058-1, at 10,000 operations and T = 85 °C / 185 °F
9) General rating at 50,000 operations and T = 85 °C / 185 °F
Functional Specifications Common to All Versions
Page 14 August 2014 POS-UM-00013-EN-02