Samson 3730 Series Mounting And Operating Instructions page 16

Design and principle of operation
Type 3730-3 Positioner
Implementation in
safety-relevant systems in
compliance with
IEC 61508/SIL
Explosion protection
Communication (local)
Software requirements
®
Communication (HART
Software requirements
®
(HART )
Binary contacts
2 software limit switches, reverse polarity protection, floating, configurable switching characteristics,
default settings as per table
Signal status:
No response:
Response:
1 fault alarm contact, floating
Signal status:
No response/No alarm
Response/Fault alarm
Operating voltage
Materials
Housing
External parts
Cable gland
Weight
16
EB 8384-3 EN
Probability of failure on demand of safety functions PFD < 2.8 x 10
level of 95 %.
The safe failure fraction (SFF) according to Table A1 in IEC 61508-2 is greater or
equal to 0.99. The valves are therefore suitable for implementation in safety-related
systems with a hardware fault tolerance of 1 or 2 up to and including SIL 4.
II 2 G EEx ia IIC T6 / II 2 D IP 65 T 80 °C or
II 3 G EEx nA II T6 / II 3 D IP 65 T 80 °C
IECEx ia IIC T6 / IP 54 and IP 65 T 80 °C
FM/CSA intrinsically safe Class I, II, III, Division 1, Group A, B, C, D, E, F, G, T6
FM/CSA non incendive Class I, Division 2, Group A, B, C, D, T6
SAMSON SSP interface and serial interface adapter
TROVIS-VIEW with database module 3730-3
®
HART field communication protocol
Impedance in the HART frequency range: receive 350 to 450 Ω,
)
send: approx. 155 Ω
For handheld communicator: device description for 3730-3,
For PC: DTM file acc. to Specification 1.2, suitable for integrating the positioner in
frame applications that supports the FDT/DTM concept (e.g. PACTware);
other integration options (e.g. AMS, PDM) available.
Without explosion protection:
Non-conducting
Conductive ® = 348 Ω )
Without explosion protection:
Conductive R = 348 Ω
Non-conducting
Positioners with model no. ../9000 only for connection to
signal converter acc. to EN 60947-5-6.
All other versions also for connection to binary input of
the PLC acc. to EN 61131, P
Die-cast aluminum EN AC-AlSi12(Fe) (EN AC-44300) acc. to DIN EN 1706,
chromated and powder paint coated · Special version: Stainless steel 1.4581
Stainless steel 1.4571 and 1.4301
M20x1.5, black polyamide
Approx. 1.0 kg
= 400 mW
max
–7
for a confidence
Exp.-protected version:
≤ 1.2 mA
≥ 2.1 mA
Exp.-protected version:
≥ 2.1 mA
≤ 1.2 mA
Only for connection to
signal converter acc. to
EN 60947-5-6