PI-EX-TB(/T)
Ex Basic Terminal Blocks for
Intrinsically Safe Signals With Knife Disconnection
and Test Connections
INTERFACE
Data Sheet
102957_00_en
1
Description
© PHOENIX CONTACT - 01/2008
PI-EX-TB
and
PI-EX-TB/T
Ex basic terminal blocks are
used as base elements for the wiring for plug-in PI Ex
modules.
The base elements can be snapped onto the popular EN
DIN rails. They must be installed in the safe area or zone 2.
The signal cables are connected to the module safely using
screw connections.
The integrated test sockets and isolating connectors enable
devices for measurements, loop checks, and calibration
tasks to be coupled in the current loop without interrupting
the signal path.
The PI-EX-TB/T basic terminal block has integrated cold
junction compensation and is therefore used as the base
element for the PI-EX-THC-I (Order No. 2835079) and
PI-EX-THC-I-NC (Order No. 2835600) temperature
measuring transducers.
NOTE:
The
PI-EX-TB/T
basic terminal block is
not suitable
for the PI-EX-RPSS-I/I,
PI-EX-DO/REL-S, and PI-EX-RTD-I electronic
modules.
1.1
–
–
–
–
–
Properties
Single-channel
Integrated test sockets
Integrated isolating connectors
Integrated cold junction compensation with the
PI-EX-TB/T
Installation in zone 2
WARNING: Explosion hazard
The device is an associated item of equipment. It is designed for use in zone 2, if the specific conditions
are 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.
WARNING: Explosion hazard
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:
PI-EX-TB(/T)
Table of Contents
1
2
3
4
5
6
7
8
Description..................................................................................................................................
1
Ordering Data .............................................................................................................................
2
Technical Data............................................................................................................................
3
Safety Regulations and Installation Notes...................................................................................
4
Structure .....................................................................................................................................
5
Installation ..................................................................................................................................
5
Isolation and Testing Options .....................................................................................................
6
PI-EX-TB/T Method of Operation ................................................................................................
6
2
Ordering Data
Type
PI-EX-TB
PI-EX-TB/T
Basic Terminal Blocks
Description
Ex basic terminal block for intrinsically safe signals
with knife disconnection and test connections
Ex basic terminal block for intrinsically safe signals
with knife disconnection and test connections
for the PI-Ex-THC-I(-NC) temperature measuring transducer
Order No.
2835901
2835927
Pcs./Pck.
1
1
Bridges
Description
Blue
Gray
Red
Type
FBST 500-PLC BU
FBST 500-PLC GY
FBST 500-PLC RD
Order No.
2966692
2966838
2966786
Pcs./Pck.
1
1
1
Continuous plug-in bridge,
500 mm long, insulated, can be cut to length, for potential distribution with PLC...
Marking
Description
Printed horizontally with consecutive numbers from 1 - 100
Printed horizontally with consecutive numbers from 1 - 10, 11 - 20, etc.
up to 91 - 100, 10 identically labeled strips per flat Zack marker sheet
Unprinted: 10 strips with 10 labels each, sufficient for 100 terminal blocks
Labeled according to customer specifications, can be separated
Type
ZBFM 6/WH,LGS:1-100
ZBFM 6/WH,LGS:FORTL.ZAHLEN
ZBFM 6/WH:UNBEDRUCKT
ZBFM 6:SO/CMS
Order No.
0800284
0803621
0803618
0803650
Pcs./Pck.
1
1
1
1
Zack marker sheet,
flat, 100-section, for all terminal blocks with a pitch of 6.2 mm, color: white
Assembly
Description
Insulating plate,
2 mm thick, black,
must be installed at the start and end of each PI terminal strip,
if continuous plug-in bridges are used.
Type
PI-ATP
Order No.
2835969
Pcs./Pck.
1
Connectors/Adapters
Description
Insulating sleeve
for MPS metal part to be ordered separately (0201744)
Blue
Gray
Red
Type
MPS-IH BU
MPS-IH GY
MPS-IH RD
Order No.
0201689
0201728
0201676
Pcs./Pck.
1
1
1
102957_00_en
PHOENIX CONTACT
2
PI-EX-TB(/T)
Tools
Description
Screwdriver,
bladed, with graduated blade,
suitable for all screw terminal blocks with a diameter of 2.3 mm,
test socket screws and test sockets, blade width: 3.5 mm
Type
SZG 0,6X3,5
Order No.
1205121
Pcs./Pck.
1
For additional accessories, please refer to the "INTERFACE" catalog from Phoenix Contact.
3
Technical Data
Connection Data
Conductor cross-section
Solid (minimum/maximum)
Stranded (minimum/maximum)
AWG/kcmil (minimum/maximum)
Stripping length
Thread
Connection method
Tightening torque
0.2 mm
2
/2.5 mm
2
0.2 mm
2
/2.5 mm
2
24/14
12 mm
M3
Plug-in screw connection
0.5 Nm, minimum/0.6 Nm, maximum
General Data
Nominal voltage UN
Nominal current IN
Housing material
Color
Degree of protection
Dimensions
Without electronic module (width x height x length)
With electronic module (width x height x length)
Inflammability class according to UL 94
Ambient temperature (operation)
12.4 mm x 86.5 mm x 145 mm
12.4 mm x 147 mm x 145 mm
V0
-20°C … +60°C
20 V ... 30 V
≤
250 mA (depends on the plugged-in module)
PBT
Gray
IP20
EC Conformance
EMC directive 89/336/EEC
Ex directive (ATEX)
Yes
Yes
Safety Data According to ATEX for Intrinsically Safe Circuits
Intrinsically safe input or output circuit (+, -), U
Power supply (UB+, UB-), U
m
Non-intrinsically safe circuit (+, -), U
m
Effective internal capacitance
Effective internal inductance
30 V (90 V when using the PI-ATP insulating plate, Order No. 2835969)
265 V AC,
Ι
< 4 A
265 V AC,
Ι
< 4 A
1 nF
1
μH
Approvals
ATEX
X
II (1) GD [EEx ia] IIC, KEMA 01 ATEX 1231
X
II 3G Ex nA II T4X
102957_00_en
PHOENIX CONTACT
3
PI-EX-TB(/T)
4
4.1
Safety Regulations and Installation Notes
Installation and Operation
For the safety data, please refer to the operating instructions
and certificates (EC-type examination, other approvals, if
necessary).
Installation in Zone 2
WARNING: Explosion hazard
Follow the installation instructions.
NOTE:
Installation, operation, and maintenance
may only be carried out by qualified specialist
personnel.
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.
NOTE:
Installation, operation, and maintenance
may only be carried out by qualified specialist
personnel.
Do not repair the device yourself, replace it with an
equivalent device. Repairs may only be carried out by the
manufacturer.
NOTE:
The device is designed to meet
IP20 protection when:
– It is installed outside potentially explosive
areas.
– The environment is clean and dry.
In order to provide protection against mechanical or
electrical damage, install the device in corresponding
housing with a suitable degree of protection according to
IEC 60529.
4.2
Safety Regulations for Installation in
Potentially Explosive Areas
The device is an associated item of equipment
with "intrinsically safe" explosion protection and is
designed for installation in zone 2, if the
symbol is printed on the block.
Observe the specified conditions for use in potentially
explosive areas.
WARNING: Explosion hazard
Install the device in suitable
housing that meets
IP54 protection, minimum.
Observe the requirements of IEC 60079-14/
EN 60079-14, e.g., steel housing with a wall
thickness of 3 mm.
WARNING: Explosion hazard
Disconnect the block power supply
before:
– Snapping it on or disconnecting it.
– Connecting or disconnecting cables of
non-intrinsically safe circuits.
WARNING: Explosion hazard
Only use category 3G PI EX modules
(ATEX 94/9/EC).
Installation in Areas With a Danger of Dust Explosions
WARNING: Explosion hazard
The device is
not
designed for use in areas with a
danger of dust explosions.
Connection to the
intrinsically safe circuit in areas with
a danger of dust explosions
(zone 20, 21, and 22) is
only
permitted if the equipment connected to this circuit is
approved for this zone (e.g., category 1D, 2D or 3D).
4.3
Use in Safety-Related Applications
Regulations for Intrinsically Safe Circuits
WARNING: Explosion hazard
When carrying out
measurements
on the
intrinsically safe side, observe the relevant
regulations regarding the connection of
intrinsically safe equipment.
Only use devices approved for use in
intrinsically safe circuits.
WARNING: Explosion hazard
If the
device has been used in
non-intrinsically safe circuits,
it must
not
be
used again in intrinsically safe circuits.
The module must be clearly labeled as
non-intrinsically safe.
When using the PI-EX-TB in safety-related applications,
observe the requirements specified in the data sheets for
the relevant modules.
102957_00_en
PHOENIX CONTACT
4
PI-EX-TB(/T)
5
Structure
+
-
UB+
UB-
UB+
UB-
6
Installation
NOTE: Electrostatic discharge
The device contains components that can be
damaged or destroyed by electrostatic discharge.
When handling the device, observe the
necessary safety precautions against
electrostatic discharge (ESD) according to
EN 61340-5-1 and EN 61340-5-2.
WARNING: Explosion hazard
When used as equipment in
zone 2,
the
electronic module must
not be disconnected
from the base element when
connected to the
power supply.
Cables of non-intrinsically safe circuits must only
be connected and disconnected
when the
power is disconnected.
+-
- +
- +
UB+
UB-
1
8
3
+
-
5
UB
-
UB
+
2
Figure 1
1
2
3
4
5
6
7
8
9
7
9
Structure
9
4
6
Field signal "+" (Ex area)
Field signal "–" (Ex area)
Signal "+" (non-Ex)
Signal "–" (non-Ex)
1
-
4
Terminal screw with integrated test socket
Voltage supply "+", UB+
Voltage supply "–", UB–
Isolating connectors
Test sockets
Holder for keying pin
145
6.1
Basic Terminal Block Wiring
The PI-EX-TB and PI-EX-TB/T basic terminal blocks can be
snapped onto popular EN DIN rails.
On the field side (intrinsically safe side), the sensors and
limit switches are connected to the terminal points marked
"+" and "-" (1 and
2).
On the system side, the cables are inserted into the terminal
points marked "+" and "-" on the top of the terminal block
(3 and
4).
The power supply is connected to the connection terminal
blocks marked "UB-" and "UB+" (5 and
6).
12.4
Dimensions
When several PI basic terminal blocks are installed
side-by-side, power can be supplied using
FBST 500-PLC… plug-in bridges.
WARNING: Explosion hazard
If the
device has been used in
non-intrinsically safe circuits,
it must
not
be
used again in intrinsically safe circuits.
The module must be clearly labeled as
non-intrinsically safe.
147
Figure 2
86.5
Dimensions (in mm)
102957_00_en
PHOENIX CONTACT
5
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