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

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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