JUMO Ex-i User guide

70754000T99Z001K000
V1.00/EN/00751108/2021-03-17
JUMO Ex-i Isolating Switch Amplifier
Safety Manual

Contents
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 Safety requirements and installation instructions. . . . . . . . . . . . . . . . . . 7
2.1 Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Intrinsic safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3 Installation in zone 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.4 Areas that are potentially explosive due to dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.5 Safety-related applications (SIL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.6 Safety data in accordance with ATEX and IECEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Connection instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.2 Electrostatic discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.3 Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.5 Inputs (intrinsically safe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.6 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.7 Voltage supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.8 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.9 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.10 Connecting the lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Effective direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.2 Line fault detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3 Operating mode table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5 Comparison of the safety data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Safety-related applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Safety function/wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
6.2 Diagnostic function due to switch DIP 2 (channel 1) and DIP 4 (channel 2). . . . . . . . . . . . .21
6.3 Safe state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
6.4 Reaction times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
6.5 Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.6 Failure behavior and required reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.7 Safety/integrity requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.8 Failure rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
6.9 Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.10 Installation and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Contents
6.11 Notes for operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.12 Start and restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.13 Regular tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.14 Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.15 Excerpt from FMEDA report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6.16 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.17 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

5
1 Introduction
1 Introduction
1.1 Safety information
General
This manual contains information that must be observed in the interest of your own safety and to avoid
material damage. This information is supported by symbols which are used in this manual as indicated.
Please read this manual before starting up the device. Store this manual in a place that is accessible to
all users at all times.
If difficulties occur during startup, please do not intervene in any way that could jeopardize your warranty
rights!
Warning symbols
WARNING!
This symbol in connection with the signal word indicates that personal injury may occur if the respective
precautionary measures are not carried out.
CAUTION!
This symbol indicates that components could be destroyed by electrostatic discharge (ESD = Electro
Static Discharge) if the respective cautionary measures are not taken.
Only use the ESD packages intended for this purpose to return device inserts, assembly groups, or as-
sembly components.
NOTICE!
This note in connection with the signal word indicates that material damage or data loss will occur if
the respective precautionary measures are not taken.
Note symbols
NOTE!
This symbol refers to important information about the product, its handling, or additional benefits.
REFERENCE!
This symbol refers to additional information in other sections, chapters, or other manuals.

1 Introduction
6
1.2 Description
JUMO Ex-i isolating switch amplifier ensures reliable, galvanic isolation and safe transfer of switch sig-
nals in a wide range of applications.
The intrinsically safe isolating switch amplifier is also suitable for use in Ex areas. It can be mounted in
Ex zone 2 and used with a sensor in zone 0.
The JUMO Ex-i isolating switching amplifier is ideal for JUMO NESOS float switches with 2 switch con-
tacts and also supports NAMUR proximity sensors. In addition, it features an extended ambient tempera-
ture range from -40 to +60 °C. The two-channel version eliminates the need for a second isolating switch
amplifier so that it saves costs as well as space in the control cabinet.
1.3 Block diagram
2 outputs
Relay
(1 changeover contact per input)
Output
AC/DC 24 to 230 V
-20 to +10 %, 50 to 60 Hz
Power supply
2 inputs
Proximity sensors
(acc. to EN 60947-5-6, NAMUR)
Unconnected contacts or
contacts with resistance circuit
Input
Ex-i Isolating Switch Amplifier

7
2 Safety requirements and installation instructions
2 Safety requirements andi nstallation instructions
2.1 Installation instructions
2.2 Intrinsic safety
– The device is associated equipment with an EPL [Ga], [Da] (category 1) of the ignition protection
type "intrinsic safety" and can be installed as a device with the EPL Gc (category 3) in the potentially
explosive area of Zone 2. The intrinsically safe electrical circuits can be routed up to Zone 0 /
Zone 20. It meets the requirements from the following standards. Precise specifications can be
found in the EU declaration of conformity which is supplied; the latest version is also on our website:
EN 60079-0, EN 60079-7, EN 60079-11, EN 60079-15
– The installation, operation, and maintenance must be carried out by personnel with electrotechnical
qualifications. Follow the described installation instructions.
Adhere to the applicable conditions and safety regulations (including national safety regulations)
and the general rules of engineering during set-up and operation.
The safety data can be found in this document and the certificates (EC type examination certificate,
if necessary additional approvals).
– Opening or modifying the device is not admissible. Do not repair the device yourself; instead, you
should replace it with an equivalent device. Repairs must only be performed by the manufacturer.
The manufacturer is not liable for damage resulting from violations of this.
– The protection type IP20 (IEC/EN 60529) of the device is intended for a clean and dry environment.
Do not expose the device to any mechanical and/or thermal stresses that exceed the described lim-
its.
– The device complies with the EMC regulations for industrial areas (EMC class A). It may cause EMC
problems if used in residential areas.
– The device must be taken out of operation if it is damaged, has been improperly stressed or stored,
or malfunctions.
– The products must be installed according to all relevant standards for electrical systems in poten-
tially explosive areas.
– Disconnect the device from all effective energy sources if they are not a SELV or PELV electrical
circuits when carrying out installation, repair, or maintenance work.
– Only use copper cables as connecting cables.
– The device is approved for intrinsically safe (Ex i) electrical circuits up to Zone 0 (gas) and Zone 20
(dust) of the Ex area. The safety values of the intrinsically safe equipment and the connecting lines
must observed during interconnection (IEC/EN 60079-14) and must adhere to the specified values
from these installation instructions/the EU type examination certificate.
– During measurements on the intrinsically safe side, make sure to observe the valid conditions rele-
vant to the interconnection of intrinsically safe equipment. Only use the approved measuring devic-
es in intrinsically safe electrical circuits.
– If the device has been used in non-intrinsically safe electrical circuits, using it again in intrinsically
safe electrical circuits is prohibited! Clearly mark the device as not intrinsically safe.

2 Safety requirements and installation instructions
8
2.3 Installation in zone 2
2.4 Areas that are potentially explosive due to dust
2.5 Safety-related applications (SIL)
When using the device in safety-related applications, observe the instructions in the chapter "Safety-re-
lated applications", as the requirements for the safety-related function vary.
chapter 6 "Safety-related applications", Page 21
– Adhere to the specified conditions for use in potentially explosive areas. Only use a suitable ap-
proved housing of the minimum protection type IP54 that meets the requirements of EN 60079-15
during installation. Also observe the requirements of EN 60079-14.
– Only devices which are suitable for operation in Ex-Zone 2 and the conditions present at the oper-
ation location can be connected to electrical circuits in Zone 2.
– Connecting or disconnecting lines and setting the DIP switch is only admissible in a de-energized
state in Zone 2.
– The device must be taken out of operation and removed from the Ex area immediately if it is dam-
aged, has been improperly stressed or stored, or malfunctions.
– Temporary malfunctions (transients) must not exceed the value 497 V (355 V x 1.4).
– The device is not designed for installation in Zone 22.
– If you nevertheless want to use the device in Zone 22, you have to install it in a housing according
to EN 60079-31. In doing so, observe the maximum surface temperatures. Adhere to the require-
ments of EN 60079-14.
– Only carry out interconnection with the intrinsically safe electrical circuit in areas that are potentially
explosive due to dust (Zones 20, 21, or 22) if the equipment connected to this electrical circuit is
approved for this zone (e.g. category 1D, 2D, or 3D).

9
2 Safety requirements and installation instructions
2.6 Safety data in accordance with ATEX and IECEx
Intrinsically safe sensor input
Max. output voltage Uo9.56 V
Max. output current Io10.3 mA
Max. output power Po25 mW
Group IIB/IIIC
Max. external inductance Lo1000 mH
Max. external capacitance Co26 µF
Additional text Simple circuit
Group IIB/IIIC
Max. external inductance Lo100 mH 5 mH 1 mH 10 µH
Max. external capacitance Co1µF 1µF 1µF 1µF
Additional text Mixed circuit
Group IIC
Max. external inductance Lo300 mH
Max. external capacitance Co3.6 µF
Additional text Simple circuit
Group IIC
Max. external inductance Lo100 mH 50 mH 5 mH 1 mH 10 µH
Max. external capacitance Co510 nF 580 nF 600 nF 600 nF 600 nF
Additional text Mixed circuit
Max. internal inductance LiNegligible
Max. internal capacitance Ci11 nF
Safety-related maximum voltage
Um
Supply terminals 253 V AC/DC
Output terminals 250 V AC / 120 V DC

2 Safety requirements and installation instructions
10

11
3 Installation
3 Installation
3.1 Connection instructions
WARNING!
Electrical dangers due to improper installation
Observe the following connection information to ensure safe installation according to EN/UL 61010-1:
WARNING!
Explosion hazard
If you have used the device in non-intrinsically safe electrical circuits, you can then no longer use it in
intrinsically safe electrical circuits. Clearly mark the device as not intrinsically safe.
3.2 Electrostatic discharge
CAUTION!
Electrostatic discharge!
The device contains elements that may be damaged or destroyed by electrostatic discharge. When deal-
ing with the device, observe the necessary safety measures against electrostatic discharge (ESD) ac-
cording to EN 61340-5-1 and IEC 61340-5-1.
– In the device installation, separating devices and auxiliary flow circuit protection devices must be
provided with suitable AC or DC values.
– The device is intended for installation in a control cabinet or in a comparable housing. The device
must only be operated when installed. The control cabinet must correspond to the requirements of
a fire protection housing of the safety standard UL/IEC 61010-1 and provide adequate protection
against electric shock or burns.
– Provide a switch/power switch close to a device that is marked as the disconnecting device for this
device (or the entire control cabinet).
–Provideanovercurrent protection device (I ≤16 A) in the installation.
– Install the device in an appropriate housing with a suitable protection type according to IEC/EN
60529 in order to protect against mechanical or electrical damage.
– Disconnect the device from all effective energy sources if it is not a SELV or PELV electric circuit
when carrying out repair or maintenance work.
– If the device is not used according to the documentation, the intended protection may be impaired.
– Settings must only be made on the device using the DIP switch when it is in a de-energized state.
– The device has basic insulation of 300 Veff to adjacent devices due to its housing. Note this when
installing multiple devices next to one another and install additional insulation if necessary. If the ad-
jacent device has basic insulation, no additional insulation is required.
– The voltages present at the input, output, and supply are extra-low voltages (ELV). The switching
voltage at the relay output may be a voltage that is dangerous to the touch (> AC 30 V / > DC 60 V)
depending on the application. In this case, safe, galvanic isolation to the other connections must be
available.

3 Installation
12
3.3 Design
(1) Pluggable screw connection terminal block
(2) Green “PWR” LED, power supply
(3) Red "LF1" LED, line fault on sensor line 1
(4) Red "LF2" LED, line fault on sensor line 2
(5) Yellow "OUT1" LED, status of relay 1
(6) Yellow "OUT2" LED, status of relay 2
(7) Switch DIP 1 to DIP 4
(8) Snap-on foot for DIN rail mounting
3.4 Schematic diagram
PWR
LF1
707540
LF2
OUT1
OUT2
4.2
4.1
5.2
5.1
2.2
2.1
1.1 1.2 1.3
3.2
3.1
4.3
5.3
2.3
3.3
1
2
3
4
1.1 1.2 1.3
2.1 2.2 2.3
3.1 3.2 3.3
Moritz-Juchheim-Str.1
36039 Fulda, Germany www.jumo.net
707540/38
TN00734357
Ex-i isolateds
witchamplifier / Ex-i Tr e nnschaltverstärker
(1)
(8) (2)
(3)
(4)
(5)
(6)
(7)
Zone 0,1,2
Zone 20,21,22
Div. 1,2
Sensor / Field PLC / DCS
3.3
2.3
3.2
2.2
3.1
2.1
CH1
CH2
IN
Zone 2
Div. 2
OUT
4.3
4.1
3.3
2.3
3.2
2.2
3.1
2.1
1.2
1.1
+
-
-
-
-
+
+
+
5.3
5.1
+
-
CH1
CH2
24...230 V
AC/DC –
~
12
12
11
11
14
14
DI

13
3 Installation
3.5 Inputs (intrinsically safe)
Connection of NAMUR proximity sensors or switching contacts (with resistance circuit)
3.6 Outputs
One relay output (changeover contact) per channel
3.7 Voltage supply
The voltage supply is fed in via the connection terminals 1.1 (+) und 1.2 (-) (DC/AC 24 to 230 V).
3.8 Dimensions
Channel 1 Terminals 4.1 (+) and 4.3 (-)
Channel 2 Terminals 5.1 (+) and 5.3 (-)
Channel 1 Terminals 3.2 (root/common = 11) and 3.1 (normally open contact =14)
Terminals 3.2 (root/common = 11) and 3.3 (normally closed contact = 12)
Channel 2 Terminals 2.2 (root/common = 11) and 2.1 (normally open contact =14)
Terminals 2.2 (root/common = 11) and 2.3 (normally closed contact = 12)
114 5.
99
112 5.
17 5.

3 Installation
14
3.9 Mounting
1. Mount the module on a 35-mm mounting rail according to EN 60715.
2. Install the module in a suitable housing in order to meet the requirements for the protection rating.
3.10 Connecting the lines
Screw connection
Admissible conductor cross section: 0.2 mm2to 2.5 mm2
1. Strip 7 mm of the wire and provide it with ferrules.
2. Insert the wire into the relevant connection terminal.
3. Tighten the screw in the opening above the connection terminal using a screwdriver.
Connection torque: 0.6 Nm

15
4 Configuration
4 Configu ratio n
NOTICE!
Only switch the DIP switch when the device is de-energized.
By default upon delivery, all DIP switches are in the "I" position.
4.1 Effective direction
Switch DIP 1 = channel 1, DIP 3 = channel 2
The effective direction is set using the DIP switch DIP 1 (for channel 1) and DIP 3 (for channel 3).
4.2 Line fault detection
Switch DIP 2 = channel 1, DIP 4 = channel 2
The line fault detection is set using the switch DIP 2 (for channel 1) and DIP 4 (for channel 2).
If line fault detection is enabled, the relay is de-energized when there is an interruption or short-circuit of
the line to the sensor, meaning that the output is put into the safe, not-conductive state.
The red LED (LF) flashes (NAMUR NE 44).
The response range according to EN 60947-5-6 for the line fault report:
(7) DIP switch
Channel 2 Channel 2
DIP 1 DIP 3 normal phase (I)
DIP 1 DIP 3 inverse phase (II)
Relay output normal phase (I) inverse phase (II)
switched if I > 2.1 mA I < 1.2 mA
in rest position if I < 1.2 mA I > 2.1 mA
I = Line fault detection disabled.
Not admissible for safety-related applications!
II = Line fault detection enabled.
Line break 0.05 mA < IIN < 0.35 mA
Short-circuit 100 Ω<R
Sensor < 360 Ω

4 Configuration
16
NOTICE!
For unconnected switching contacts, line fault detection (LF) must be disabled or the corre-
sponding resistance circuit must be provided directly at the switching contact.
4.3 Operating mode table
WARNING!
For safety-related applications, only the switch position "DIP 2/DIP 4 = II" is admissible!
WARNING!
For safety-related applications, only switches with resistance circuit are admissible at the input.
Unconnected switching contact Switching contact with resistance circuit

17
4 Configuration
NAMUR: proximity switch according to EN 60947-5-6 (NAMUR) or switching contact with resistance circuit X: LED on or flashing
Sensor in input Input circuit DIP switch Output LED LED Admissible for safety-
related applications
Switch Switching con-
tacts with resistance circuit
NAMUR State Chan-
nel 1
Chan-
nel 2
Relay contact OUT LF
1 2 3 4 Normally
open con- tact
Normally closed con- tact
Yel-
low
Red
Open Open Blocking OK I I I I Open Closed No Closed Closed Conduct-
ing
OK I I I I Closed Open X No
Open Open Blocking OK II I II I Closed Open X No Closed Closed Conduct-
ing
OK II I II I Open Closed No
Open Blocking OK I II I II Open Closed Yes Closed Conduct-
ing
OK I II I II Closed Open X Yes
Any Any Wire break I II I II Open Closed X Yes Any Any Short-circuit I II I II Open Closed X Yes Open Blocking OK II II II II Closed Open X Yes Closed Conduct-
ing
OK II II II II Open Closed Yes
Any Any Wire break II II II II Open Closed X Yes Any Any Short-circuit II II II II Open Closed X Yes

4 Configuration
18

19
5 Comparison of the safety data
5 Comparison of the safety data
WARNING!
Explosion hazard
Compare the safety data before you connect a module located in the Ex-i area to the JUMO Ex-i isolating
switch amplifier.
Provide proof of intrinsic safety according to the standard IEC/EN 60079-14 and, if necessary, additional
national standards and installation regulations.
Safety data of the
You can find the values for Uo, Io, Po, Lo, Coin chapter 2.6 "Safety data in accordance with ATEX and
IECEx", Page 9.
Example for proof of intrinsic safety (simple electrical circuit):
Lcand Ccdepend on the cables/lines used.
Proof of intrinsic safety (simple intrinsically safe electrical circuit)
In a simple intrinsically safe electrical circuit without external concentrated capacitances (Ci) and without
external concentrated inductances (Li), the full values of C0nd L0can be used.
chapter 2.6 "Safety data in accordance with ATEX and IECEx", Page 9
Proof of intrinsic safety (mixed intrinsically safe electrical circuit)
Condition for the mixed intrinsically safe electrical circuit with external concentrated capacitances (Ci)
and/or external concentrated inductances (Li):
•L
i<1%ofL 0or Ci<1%ofC 0
The full values of C0and L0can also be used here.
chapter 2.6 "Safety data in accordance with ATEX and IECEx", Page 9
•L
i≥1%ofL 0and Ci≥1%ofC 0
The values of C0and L0that have been reduced by 50 % must be used here:
•C
i+ Cc≤0.5 C0
•L
i+ Lc≤0.5 L0
In order to be able to realize larger line lengths, you can also use certified value pairs alternatively to the
values reduced by 50 %.
chapter 2.6 "Safety data in accordance with ATEX and IECEx", Page 9
Field devices: Ui, Ii, Pi, Li, Ci
NAMUR Ex-i isolating switch amplifier Uo, Io, Po, Lo, Co
Data Conditions
Ui≥Uo-
Ii≥Io-
Pi≥Po-
Li+L
c≤LoLi<1%ofL oor Ci<1%ofC o
Ci+C
c≤Co
Li+L
c≤0.5 LoLi≥1%ofL oor Ci≥1%ofC o
Ci+C
c≤0.5 Co

5 Comparison of the safety data
20