EB 8355-1 EN 9
Design and principle of operation
Electromagnetic compatibility Complying with requirements specified in EN 61000-6-2,
EN 61000-6-3 and NAMUR Recommendation NE 21
Explosion protection Refer to article code or list of approvals in Data Sheet T 8355 EN
Degree of protection IP 54 (special version IP 65)
Weight Approx. 1 kg
Additional equipment
Limit switches
Two inductive proximity switches Type SJ 2-SN
Control circuit Ratings according to downstream transistor relay
Hysteresis at rated travel
£
1 %
Solenoid valve
Input Binary direct current signal
Nominal signal 6 V DC 12 V DC 24 V DC
Signal 0 (no pick-up)
3)
£
1.2 V
£
2.4 V
£
4.7 V
Signal 1 (safe pick-up)
4)
³
5.4 V
³
9.6 V
³
18.0 V
Maximum permissible signal 28 V 25 V 32 V
Coil resistance R
i
at 20 °C 2909
W
5832
W
11714
W
Air consumption in steady state In addition to that of the positioner:
'Off'
£
60 l
n
/h · 'On'
£
10 l
n
/h
1)
Closing time for
rated travel and
signal pressure
range (K
VS
0.14)
Type 3277 Actuator 120 cm² 240 cm² 350 cm² 700 cm²
0.2 to 1 bar
£
0.5 s
£
0.8 s
£
1.1 s
£
4 s
0.4 to 2 bar
£
0.5 s
£
2 s
£
2.5 s
£
8 s
0.6 to 3 bar
6)
£
1 s
£
1.5 s
£
5 s
Analog position transmitter
Output signal Two-wire circuit 4 to 20 mA
Auxiliary power Min. terminal voltage:
12 V, max.: 45 V
The position transmitter must only
be connected to a certified
instrinsically safe circuit
5)
1)
With lowest setting of pressure regulator
2)
The limits of the EC-Type Examination Certificate additionally apply
3)
DC voltage at –25 °C
4)
DC voltage at +80 °C
5)
e.g. using a SAMSOMATIC Type 994-0103-KFD2-STC4-Ex1 Loop Isolator
6)
Actuator 120 cm² in all signal pressure ranges:
£
0.5 s
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