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 sed to prod ce p to three
additional safety contact paths per device. An existing system can
th s be expanded practically indefinitely in a mod lar manner.
Activation takes place via a safety contact of the basic device, the
SEU-1 provides signaling contacts for fa lt monitoring. The
devices can be sed in machines and systems p 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 mm2must not be ex-
ceeded.
•
The line cross section must not exceed 2.5 mm2.
•
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 Ins alla ion / removal
Fig. 3 Connec ions
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
14 24
K 2
K 1
34
S 2 3
S 2
SEU-
(no for plug-in erminals)
•
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.
