User Information
Safety Relays from IDEM SEU-1
H04
Ver. A
E61-326-00
Correct Use
The SEU-1 contact block in combination with any basic device
from the IDEM SCR series can be used to produce up to three
additional safety contact paths per device. An existing system can
thus be expanded practically indefinitely in a modular manner.
Activation takes place via a safety contact of the basic device, the
SEU-1 provides signaling contacts for fault monitoring. The
devices can be used in machines and systems up to safety cate-
gory 4, PL e according to EN ISO 13849-1.
Features
•
3 safe, redundant relay outputs
1 auxiliary contact (fault monitoring)
•
Activation via basic device from the IDEM SCR series
•
Modular, freely configurable safety system
•
Fault monitoring by basic device
•
Earth fault monitoring
•
Indication of the switching state via LED
•
Up to category 4, PL e, SILCL 3
Function
The safety expansion module SEU-1 in combination with a
basic device from the IDEM SCR series is designed for
safe isolation of safety circuits according to EN 60204-1
and can be used up to safety category 4, PL e according to
EN ISO 13849-1.
Terminal S11 (DC 24 V control voltage) is connected with
terminals S15 and S16 via the safety contacts of the basic
device. Starting the basic device also activates the SEU-1.
The basic device disconnects the control voltage when the
safety switch is operated, and the safety contacts of the
SEU-1 open immediately.
If a fault occurs in the SEU-1, this is detected by the basic
device via terminals S23 and S24.
Independent operation without basic device is not
possible.
Electrical
Connection
•
When the 24 V version is used, a control transformer
according to DIN EN 61558-2-6 or a power supply unit
with electrical isolation from the mains must be connect-
ed.
•
External fusing of the safety contacts (6 A gG) must be
provided.
•
A maximum length of the control lines of 1000 meters
with a line cross section of 0.75 mm
2
must not be ex-
ceeded.
•
The line cross section must not exceed 2.5 mm
2
.
•
If the device does not function after commissioning, it
must be returned to the manufacturer unopened. Open-
ing the device will void the warranty.
Installation
As per EN 60204-1, the device is intended for installation in
control cabinets with a minimum degree of protection of
IP54. It is mounted on a 35 mm DIN rail according to DIN
EN 60715 TH35.
Safety
Precautions
Fig. 1 Block diagram SEU-1
Fig. 2 Installation / removal
Fig. 3 Connections
A1:
Power supply
A2 :
Power supply
S11:
DC 24 V control voltage
S10:
Control line
S15:
Control line
S16:
Control line
S23:
Fault monitoring
S24:
Fault monitoring
13-14:
Safety contact 1
23-24:
Safety contact 2
33-34:
Safety contact 3
13 23
14 24
K 2
K 1
33
34
S 2 3
S 2 4
SEU-1
(not for plug-in terminals)
•
All relevant safety regulations and standards are to be
observed.
•
The overall concept of the control system in which the
device is incorporated must be validated by the user.
•
Failure to observe the safety regulations can result in
death, serious injury and serious damage.
•
Note down the version of the product (see label “Ver: x”)
and check it prior to every commissioning of a new de-
vice. If the version has changed, the overall concept of
the control system in which the device is incorporated
must be validated again by the user.
•
Installation and commissioning of the device must be
performed only by authorized personnel.
•
Observe the country-specific regulations when installing
the device.
•
The electrical connection of the device is only allowed to
be made with the device isolated.
•
The wiring of the device must comply with the instruc-
tions in this user information, otherwise there is a risk
that the safety function will be lost.
•
It is not allowed to open the device, tamper with the
device or bypass the safety devices.
