Additional Equipment - Samson 3767 Mounting And Operating Instructions

2.3 Additional equipment
Inductive limit contacts
Two proximity switches
Control circuit
Hysteresis at rated travel
Solenoid valve
Input
Nominal signal
Signal '0' (no response)
DC signal at –25 °C
Signal '1' (response)
DC signal at 80 °C
Maximum permissible signal
Coil resistance R at 20 °C
i
Air consumption in steady state
Closing time for Type 3277
Rated travel and
0.2 to 1 bar
signal pressure
0.4 to 2 bar
range
(K = 0.14)
0.6 to 3 bar
VS
Position transmitter
1), 2)
Output signal
Auxiliary power
Characteristic
Hysteresis
Response
Influence of power supply
High-frequency influence
Load influence
Permissible ambient temperature
Ambient temperature influence
Ripple of output signal
Data based on standard spring (15 mm travel with Type 3277 Actuator) and gain of 100.
1)
Available until March 2011
2)
EB 8355-2 EN
6 V DC
≤1.2 V
≥5.4 V
28 V
2909 Ω
In addition to that of the positioner: OFF ≤60 l
120 cm²
Actuator
≤ 0.5 s
Two-wire connection 4 to 20 mA, reversible operating direction
Minimum terminal voltage: 12 V DC
Deviation from characteristic according to terminal point method: ≤1 %
≤0.1 %, f = 150 MHz, 1 W power output at a distance of 0.5 m
≤0.4 % on lower measuring range value, ≤0.2 % on measuring span
Design and principle of operation
Values according to downstream transistor relay
Binary DC voltage signal
12 V DC
≤2.4 V
≥9.6 V
25 V
5832 Ω
240 cm²
≤1 s
≤2 s
≤1 s
–
max. 45 V DC
Linear characteristic
≤1 % when voltage changes occur within the specified limits
–20 to 70 °C
SJ2-SN
≤1 %
24 V DC
≤4.7 V
≥18 V
32 V
11714 Ω
/h · ON ≤10 l
n
350/355 cm²
≤1.5 s
≤2.5 s
≤1.5 s
Output circuit, intrinsically safe
Only with intrinsically safe circuit
≤0.6 %
≤0.1 %
≤0.1 %
–20 to See test certificate
à
≤0.3 %
/h
n
700 cm²
≤4 s
≤8 s
≤5 s
11