Samson 3767, Перевод оригинальной инструкции

Страница: 19 / 112

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