Samson Electri Actuator Type 3374 EB 8331-1 EN - Manual (Page 7)

EB 8331-1 EN
7
Design and principle of operation
Digital positioner 1)
Operating mode 1 Operating mode 2 Operating mode 3
Input signal 2)
Range
4...20 mA, Ri = 0.05 k W
2...10 V, Ri = 10 k W
0...20 mA, Ri = 0.05 k W
0...10 V, Ri = 10 k W
As per settings 3)
Resolution 10 Bit
Position feedback
signal 4)
Range
4...20 mA, R
B
0.2 £ k W
2...10 V, R
B
³ 5 k W
0...20 mA, R
B
£ 0.2 k W
0...10 V, R
B
³ 5 k W
As per settings 3)
Resolution 8 Bit
Characteristic
Increasing, actuator stem retracts or extends
as the input signal increases
As per settings 3)
Travel Adjustable 6 to 19 mm at 15 mm rated travel
6 to 35 mm at 30 mm rated travel
Setting
Using travel calibration button
(1 mm each time the button is pressed)
As per settings 3)
using button
1 binary input Electrically isolated, switching voltage 18 to 30 V DC, approx. 7 mA
1 binary output Electrically isolated semiconductor contact, max. 45 V DC,
min. 3 V DC, max. 25 mA
Integrated interface for SAMSON
memory pen/PC
Data transmission including settings, operating status and alarms
Transfer protocol: SAMSON SSP protocol
Total delay time Approx. 30 ms
Accuracy £ 2.5 % without taking the dead band into account
1)
Maximum two current inputs may be switched in series
2) Maximum values ±50 mA or ±25 V
3) SAMSON TROVIS-VIEW Operator Interface software, SAMSON memory pen