Operation Manual Safe2+ / Safe4
© CEDES Safety & Automation AG / June 2008 www.cedes.com 3
2. Introduction
Safe4 safety light curtains are active optoelectronic
protective equipments AOPE type 4 with object de-
tection capability of 14 mm or 30 mm. Safe4 has a
built-in fully redundant self-monitoring circuitry and
complies to annex VI of the European Machinery
Directive EC/98/37 and IEC 61496 as a safety com-
ponent. Safe4 is a control reliability device as well as
defined in ANSI B11.19-1990, 5.5 and OSHA 29
CFR 1910.212.
Safe2+ safety light curtains are active optoelectronic
protective equipments (AOPE) type 2 and comply to
annex IV of the European Machinery Directive
EC/98/37 and IEC 61496 as a safety component.
Moreover the systems comply as a control reliability
device as defined in ANSI B11.19-1990, 5.5 and
OSHA 29 CFR 1910.212.
A special feature of the Safe2+ system compared to
ordinary safety light curtains of type 2 is that the
controllers have a built-in fully redundant self-
monitoring circuitry. This feature makes the usual
implementation of a self test at the beginning of each
machine start unnecessary. The safety function of
each Safe2+ light curtain is never influenced in any
moment by the self test monitoring.
The big advantage for you as a user is that you can
run the Safe2+ system in the self test mode. So you
do not have to think about connecting and installing
an external test. You just have to wire a system cor-
responding to a type 4 system.
2.1. System design
Safe2+ or Safe4 light curtains consists of an emitter
and a receiver (Figure 1).
The emitter as well as the receiver of Safe 4 have a
standard built-in intelligent laser alignment system
ILAS.
By request the ILAS can be supplied in the Safe2+
safety light curtain.
This allows a much easier adjustment during installa-
tion and system testing compared to conventional
safety edges. The ILAS may also be used as a vibra-
tion indicator at the installation.
CEDES
Safe4
CEDES
Safe4
Detection capability
(resolution)
Operating range
Protection height
Intelligent Laser Alignment System ILAS
Intelligent Laser Alignment System ILAS
Figure 1: Main system parameters
The products are a modular construction housed in a
very compact and sturdy extruded aluminium profile.
If space is limited, the controller may be separated
from the sensor by using an interconnection cable
(Figure 2).
Controller
separated
Standard
Protective field
Controller
Protective field
Controller
Figure 2: Integrated and separated Controller
2.2. Special features
The outstanding features of the safety light curtain
systems of Safe2+ or Safe4 are:
! Integrated self test mode, which make an ex-
ternal testing unnecessary
! Configuration with fitted intelligent laser
alignment ILAS (as an option for Safe2+)
! Finger (14 mm) and hand protection (30 mm)
available
! Wide dynamic range with a compact profile
type:
14 mm resolution: 0 m up to 9 m
30 mm resolution: 0 m up to 18 m, optional 6
or 5 up to 30 m
! Max. 256 beams per system
! Tolerant to dust, soiling, pollution
! Short circuit protected semiconductor outputs
! Electrical interface compatible to industry
standard
! Built-in diagnostic LED or optical interface
(OptiLink) for quick trouble shooting
! Very compact design: 30 x 40 mm (1.2" x 1.6")
! Very compact design for the whole dynamic
range
! Wide standard product range for resolution,
protective height, type of application
! Separate controller as an option
! Several protective fields by cascading
! Customer specific version on request
! Optical synchronisation, no electrical cable
needed between emitter and receiver
! Modern technology
! Insignificant power consumption
! Maintenance-free and cost effective
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