Samson 3730-6, Mounting And Operating Instructions

Page: 17 / 124

EB 8384-6 EN
17
Design and principle of operation
Options for Type 3730-6 Positioner
Inductive limit switch
For connection to switching amplifier acc. to EN 60947-5-6.
Can be used in combination with a software limit switch.
SJ2-SN proximity switch NAMUR NC contact
SJ2-S1N proximity switch NAMUR NO contact
Solenoid valve · Approval acc. to IEC 61508/SIL
Input 24 V DC reverse polarity protection, static destruction limit 40 V
Current consumption I =
U 5.7 V
3840
-
W
(corresponding to 4.8 mA at
24 V/114 mW)
Signal "0" no pick-up £ 12 V
Signal "1" safe pick-up > 19 V
Service life > 5 x 10 6 switching cycles
Use in safety-instrumented systems in
compliance with IEC 61508/SIL
Suitable for use in safety-instrumented systems up to SIL 2
– triggered by the set point, emergency venting at £ 3.8 mA or £ 4.4 mA
depending on the positioner version
– by the optional forced venting, emergency venting at £ 12 V
Suitable for use in safety-instrumented systems up to SIL 3
The current circuit of the set point and the forced venting must both be operated
in a safety-related system
Forced venting
· Approval acc. to IEC 61508/SIL
Input
24 V DC reverse polarity protection, static destruction limit 40 V
Current consumption I =
U 5.7 V
3840
-
W
(corresponding to 4.8 mA at
24 V/114 mW)
Signal "0" no pick-up £ 12 V
Signal "1" safe pick-up > 19 V
Use in safety-instrumented systems in
compliance with IEC 61508/SIL
Suitable for use in safety-instrumented systems up to SIL 2
– triggered by the set point, emergency venting at £ 3.8 mA or £ 4.4 mA
depending on the positioner version
– by the optional forced venting, emergency venting at £ 12 V
Suitable for use in safety-instrumented systems up to SIL 3
The current circuit of the set point and the forced venting must both be operated
in a safety-related system
Analog position transmitter
Two-wire transmitter · Galvanically isolated
Supply voltage 12 to 30 V DC · Reverse polarity protection · Static destruction limit 40 V
Output signal 4 to 20 mA
Direction of action Reversible
Operating range –10 to +114 %
Characteristic Linear
Hysteresis and HF influence or other
influences
Same as positioner
Fault indication Can be issued with current signal 2.4 ±0.1 mA or 21.6 ±0.1 mA