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2865201

P1-P3P4-P6P7-P9P10-P10
© PHOENIX CONTACT - 02/2008
103211_00_en
INTERFACE
PI-EX-SD-21-25
Data Sheet
1 Description
The solenoid driver PI-EX-SD-21-25 links a signaling
device installed in the safe area to a device located in the
hazardous area. The block itself is installed outside the
hazardous area or in Zone 2.
Solenoid valves, alarm modules, or other intrinsically safe
devices can be connected, and simple electrical equipment
such as LEDs can be operated.
The safety data allows loads to be operated in an IIC group
gas.
The solenoid driver PI-EX-SD-21-25 does not require its
own power supply; instead, it is simply looped into the
circuit.
1.1 Properties
– Single-channel
– Loop-powered
– Output [Ex ia] IIC
– Installation in Zone 2
– Electrical 2-way isolation
– SIL 3 acc. to IEC 61508
The device is associated equipment, which is suitable for use in Zone 2, provided that particular
conditions have been observed.
When installing and operating the device, the applicable safety directives (including national safety directives),
accident prevention regulations, as well as general technical regulations, must be observed.
Observe the safety regulations and installation notes on page 4.
Make sure you always use the latest documentation.
It can be downloaded at www.download.phoenixcontact.com
.
A conversion table is available on the Internet at
www.download.phoenixcontact.com/general/7000_en_00.pdf.
This data sheet is valid for all products listed on the following page:
Ex-i solenoid driver for Group IIC gases,
loop-powered, pluggable
PI-EX-SD-21-25
103211_00_en PHOENIX CONTACT 2
Table of Contents
1 Description.................................................................................................................................. 1
2 Ordering Data............................................................................................................................. 2
3 Technical Data............................................................................................................................ 2
4 Safety Regulations and Installation Notes.................................................................................. 4
5 Structure..................................................................................................................................... 5
6 Installation .................................................................................................................................. 5
7 Comparison of Safety Data ........................................................................................................ 6
8 Calculation of a Valve Circuit...................................................................................................... 6
9 Safety-Related Applications (SIL 3)............................................................................................ 7
10 Appendix..................................................................................................................................... 7
2 Ordering Data
3 Technical Data
Ex Solenoid Driver
Description Type Order No. Pcs./Pck.
Ex-i solenoid driver for Group IIC gases, loop-powered, pluggable PI-EX-SD-21-25 2865201 1
Accessories
Description Type Order No. Pcs./Pck.
Motherboard See "INTERFACE" catalog
Ex basic terminal block for intrinsically safe signals with knife disconnection
and test connections
PI-EX-TB 2835901 10
Intrinsically safe basic terminal block, with knife disconnection,
test connections, and surge protection, for mounting on NS 35/7,5
TT-PI-EX-TB 2858386 10
Basic terminal block for non-intrinsically safe signals, with surge protection TT-PI-TB 2858373 10
Basic terminal block for non-intrinsically safe signals, without
surge protection
PI-TB 2835943 10
Continuous plug-in bridge, 500 mm long, insulated, can be cut to length, for
potential distribution, I
max
= 32 A, color of the insulating material:
Red
Blue
Gray
FBST-500-PLC-RD
FBST-500-PLC-BU
FBST-500-PLC-GY
2966786
2966692
2966838
20
20
20
For additional accessories, please refer to the "INTERFACE" catalog from Phoenix Contact.
Input
Input signal 20 V DC - 30 V DC
Output
Output characteristic curve (see Figure 1 on page 3) U
V
= 21.9 V (guaranteed voltage)
R
i
= 654 Ω (internal resistance)
Output voltage, intrinsically safe 5.5 V at 25 mA
Current limit At 25 mA
PI-EX-SD-21-25
103211_00_en PHOENIX CONTACT 3
Output characteristic curve
Figure 1 Output characteristic curve for PI-EX-SD-21-25
0
10
20
0 102030405060
21.9 V
5.5 V
Output voltage U
V
Output current I
V
General Data
Supply voltage range (No separate supply voltage necessary)
Maximum current consumption at 24 V DC 130 mA
Maximum power dissipation at 24 V DC 0.9 W
Electrical isolation (input/output) 375 V (peak value according to EN 50020)
Housing material PBT and polyamide PA non-reinforced
Inflammability class according to UL 94 V0
Degree of protection IP20
Color Green
Dimensions
Without basic terminal block (width x height)
With basic terminal block (width x height x length)
12.4 mm x 108.6 mm
12.4 mm x 147 mm x 145 mm
Ambient Conditions
Ambient temperature (operation) -20°C - +55°C (perpendicular mounting of DIN rail)
-20°C - +60°C (horizontal mounting of DIN rail)
Average temperature according to IEC 61508 40°C
Ambient temperature (storage/transport) -40°C - +80°C
Permissible humidity (operation) 10% - 95% (relative humidity, no condensation)
Indicators
Status indicator Yellow LED (switching state)
Red LED (line fault)
EU Conformity
Complies with EMC directive 89/336/EEC Yes
Ex directive (ATEX) Yes
Safety Data According to ATEX for Intrinsically Safe Circuits
Maximum output voltage U
o
25.1 V
Maximum output current I
o
39 mA
Maximum output power P
o
245 mW
Gas group
Max. external inductance L
o
Max. external capacitance C
o’
IIA
20 mH
0.66 μF
IIB
5 mH
0.43 μF
IIC
0.5 mH
0.093 μF
True r.m.s. value of maximum AC voltage U
m
Maximum DC voltage U
m
250 V AC
125 V DC
Certificates
ATEX X II (1) GD [EEx ia] IIC/IIB/IIA, TÜV 06 ATEX 553193
X II 3 G Ex nA II T4 X
UL/CUL UL applied for
P1-P3P4-P6P7-P9P10-P10

2865201

Mfr. #:
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Manufacturer:
Phoenix Contact
Description:
Antennas PI-EX-SD-21-25
Lifecycle:
New from this manufacturer.
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