Micro Detectors SB400 User manual

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M.D. Micro Detectors
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SB400
Safety Modules
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Installation and Operation Manual
ENGLISH
M.D. Micro Detectors
CAT8ESB1261001
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SB400
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CONTENTS
1.0$INTRODUCTION$.............................................................................................................................$3$
2.0$SB400$MODULE$.............................................................................................................................$4$
2.1$OPERATING$MODES$DESCRIPTION$.............................................................................................$4$
2.1.1$AUTOMATIC$.......................................................................................................................$4$
2.1.2$MANUAL$............................................................................................................................$5$
2.1.3$CONNECTION$OF$EXTERNAL$CONTACTORS$K1$and$K2$.........................................................$5$
2.2$SIGNAL$DESCRIPTION$.................................................................................................................$6$
2.2.1$The$RESTART$command$.....................................................................................................$6$
2.2.2$K1K2$FEEDBACK$input$........................................................................................................$7$
2.2.3$SYSTEM$STATUS$output$......................................................................................................$7$
2.3$INSTALLATION$AND$ELECTRICAL$CONNECTIONS$.........................................................................$7$
2.3.1$Characteristics$of$the$output$circuit.$..................................................................................$7$
2.3.2$Use$of$K1$and$K2$auxiliary$contact$elements$......................................................................$8$
2.3.3$Warnings$regarding$the$connection$cables$.........................................................................$8$
2.4$STATUS$INDICATORS$..................................................................................................................$9$
2.5$DIMENSIONS$.............................................................................................................................$9$
2.6$TECHNICAL$DATA$SB400$..........................................................................................................$10$
2.7$STATUS$INDICATORS$/$FAULT$DIAGNOSIS$................................................................................$11$
2.7.1$Status$indicators$..............................................................................................................$11$
2.7.2$FAULT$DIAGNOSIS$............................................................................................................$11$
2.8$PERIODIC$TESTS$TO$DO$EVERY$YEAR$........................................................................................$12$
2.9$GUARANTEE$............................................................................................................................$14$

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!This symbol indicates an important personal safety warning. Failure to comply with the warning
may result in very high risk for exposed personnel.
1.0 INTRODUCTION
The SB400 interface, connected to an IEC 61496 – ½certified type 4 safety light curtain and
equipped with two auto controlled PNP type solid-state outputs, is a type 4 ESPE (Electro sensitive
Protective Equipment).
The other characteristics indicated above remaining constant, if the light curtain is type 2, the
entire ESPE will be type 2.
The SB400 main features are the following:
•Inputs for the connection of one safety barrier with fail safe outputs
•Restart manual or automatic selectable
•2 N.O. outputs with guided contact safety relays
•1 system monitor PNP output
•1 external contactors feedback input
The safety modules also guarantees that:
•the output lines are open if the barrier is intercepted;
•the output lines are enabled only with correct response times;
•in manual mode, maintenance of the RESTART contact closed is not interpreted as AUTO
mode.
!For safe use of the device, it is essential to read and understand the contents of this handbook.
!Failure to comply with the prescriptions indicated in this handbook may result in very high risks
for the operating personnel of the machine protected.

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2.0 SB400 MODULE
2.1 OPERATING MODES DESCRIPTION
OPERATING MODES SELECTION
TERMINAL 5
TERMINAL 6
OPERATION
0 Vdc
+24 Vdc
Automatic
+24 Vdc
0 Vdc
Manual
0 Vdc
0 Vdc
Non-permissible
conditions
+24 Vdc
+24 Vdc
Table 1
2.1.1 AUTOMATIC
In this operating mode, the outputs of the safety module follow the status of the photocell:
•with the protected area free (outputs of the barrier active), the relay outputs of the control
unit are active.
•with the protected area occupied (outputs of the barrier de-activated), the relay outputs of
the safety module are de-activated.
Figure 1
!Use in manual mode (start/restart interlock activated) is mandatory in the case in which the
safety device controls an access protecting a danger zone and once a person has passed through
the opening, he/she may remain in the danger zone without being detected (use as trip device
according to IEC 61496). Failure to comply with this rule may result in very serious risks for the
persons exposed.
!Check correct functioning of the entire safety system (control unit+barrier) following each re-
installation. In particular, if the original operating mode was Manual, check that the unit has been
reconfigured in this mode.

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2.1.2 MANUAL
In this operating mode, the outputs of the control unit are activated only if the protected area is
free and after sending the RESTART signal to the control unit using the push-button or by means
of a specific command on the RESTART input (terminal 4).
Once the protected area has been occupied, the relay outputs are deactivated. The sequence
described above must be repeated in order to re-activate them.
The RESTART command is active with a voltage of 24 Vdc.
The minimum duration of the command is 100 ms.
Figure 2
2.1.3 CONNECTION OF EXTERNAL CONTACTORS K1 and K2
Control of external contactors K1K2 can be activated in both operating modes. If this control must
be used, the series of normally closed contacts of the external contactors must be connected to
terminal 11 of the control unit (figures 3 and 4).
Figure 3
Automatic functioning with K1K2 relays

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Figure 4
Manual operation with K1/K2 relays
2.2 SIGNAL DESCRIPTION
TERMINAL
NUMBER
SIGNAL NAME
TYPE OF SIGNAL
DESCRIPTION
1
24 Vdc
Power supply 24 Vdc
2
0 Vdc
Power supply 0 Vdc
3
PE
Ground connection
4
RESTART
Input
Restart command
5
MAN
Input
Manual / Automatic Configuration
6
AUTO
Input
7
INPUT1 BARR
Input
Safety barrier input 1 status
8
INPUT2 BARR
Input
Safety barrier input 2 status
9
n.c.
-
-
10
n.c.
-
-
11
K1k2 (Feedback)
Input
Feedback external contactors K1K2
12
SYSTEM STATUS
Output
Output status
13
Relay B NO 1
Output
Safety relay B, contact 1 (N.O.)
14
Relay B NO 2
Output
Safety relay B, contact 2 (N.O.)
15
Relay A NO 1
Output
Safety relay A, contact 1 (N.O.)
16
Relay A NO 2
Output
Safety relay A, contact 2 (N.O.)
Table 2
2.2.1 The RESTART command
•The RESTART command must be sent to the control unit connecting terminal 4 to the +24
Vdc.
•The contact used for the RESTART command must be able to switch a voltage of 24 Vdc
and a current of 20 mA (guaranteeing a closing time > 100 ms). This data is particularly
important in the case of automatic management of the RESTART command sending, for
example using a PLC.
•The SYSTEM RESET TIME is obtained adding the reset time of any external contactors
K1K2 to the reset time of the SB400 control unit (100 ms).
•In the case of manual activation, a normally open external button can be used, temporary
closing of which generates the RESTART command.

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!The Restart command must be installed outside the danger area in a position where the danger
area and the entire work area concerned are clearly visible.
!It must not be possible to reach the control from inside the danger area.
2.2.2 K1K2 FEEDBACK input
Using the K1 and K2 auxiliary safety contactors with guided contact safety type, it is necessary to
connect the +24 Vdc to the K1K2 FEEDBACK through the series of the K1-1 e K2-1 N.C. control
contacts. The control of the correct switching of K1 and K2 is performed with a delay of 300 ms
after the real command. When the K1-1 e K2-1 N.C. control contacts are not used (or no control is
provided) it is mandatory to connect the terminal 11 (K1K2 FEEDBACK) to the +24 Vdc.
2.2.3 SYSTEM STATUS output
The SYSTEM STATUS output reports exactly the output safety relays status :
•When the output relays are opened, the SYSTEM STATUS reports 0 Vdc.
•When the output relays are closed, the SYSTEM STATUS reports +24 Vdc.
2.3 INSTALLATION AND ELECTRICAL CONNECTIONS
!Install the SB400 control unit in an environment with a protection rating of at least IP54.
!If more modules SB400 must be installed in the same board panel, in order to avoid overheating,
maintain between them one minimal distance of 2 cm.
!The SB400 control unit must be supplied with a 24 Vdc ±20%.
!The external power supply must comply with the standard EN 60204-1.
!During the installation of the SB400 control unit be sure to avoid short circuits between the
contacts 7 and 8.
2.3.1 Characteristics of the output circuit.
For the output circuit, the control unit uses two guided contact safety relays.
These relays are rated by the manufacturer for voltage and current values above those indicated
in the technical data; however, to assure correct insulation and to avoid damage or premature
aging, protect each output line with a 4 A slow-blow fuse and check that load characteristics
comply with the indications given in the table below.
Minimum switching voltage
18 Vdc
Minimum switching current
20 mA
Maximum switching voltage
250 Vac
Maximum switching current
2 A

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2.3.2 Use of K1 and K2 auxiliary contact elements
For loads with higher voltage and current characteristics than those indicated in the table above,
use of auxiliary external relays or contactors suitable for the load to be controlled is recommended.
•The K1 and K2 auxiliary contactors or relays must be of the guided contact safety type.
•Referring to the table below, pay particular attention to the configuration of the control
contacts on terminal 11 and that of the contacts of use.
Relay K1
Relay K2
Control contacts
K1-1 normally closed
K2-1 normally closed
Use contacts
K1-2 normally open
K2-2 normally open
•Control contacts K1-1 and K2-1 (terminal 11) must be able to switch a current of 20 mA
and a voltage of 24 Vdc.
•To increase the electrical life of internal relays A and B, it is advisable to use anti-
disturbance devices which must be connected across the coils of K1 and K2.
2.3.3 Warnings regarding the connection cables
•For light curtain/control unit connections of more than 50 m, cables with a cross-section of
at least 1 mm2must be used.
•It is good practice to separate the power supply of the control unit from that of other
electrical appliances (electrical motors, inverters, frequency variators) or other sources of
disturbance.
•The path of the connection cables between the control unit and the sensors, the
connection referring to the test command and feedback contacts connected to terminal 11
must be different from that of other power cables.

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2.4 STATUS INDICATORS
Figure 5
LED
COLOR
STATUS
CONDITION
IN
Green
ON
Barrier free
OFF
Barrier intercepted
FAIL
Red
ON
Fault detected *
OFF
Correct operation
GUARD
BREAK
Green /
Red /
Yellow
RED
Output relays opened
RED blinking
The number of blinking shows the
kind of FAIL (only with FAIL is ON) *
GREEN
Output relays closed
YELLOW
Barrier free – Output relays opened
(only in manual mode)
Table 3
* M.D. MICRO DETECTORS TO THE “FAULT DIAGNOSI” SECTION TO HAVE A
DETAILED EXPLANATION OF THE POSSIBLE FAULT
2.5 DIMENSIONS
Figure 6

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2.6 TECHNICAL DATA SB400
Safety category
4
Power supply
Vdc
24 ± 20%
Power requirement
W
5 max
Output
Relay
2 N.O. contacts (2 A; 250 Vac)
System Status Output
100 mA; 24 Vdc
Response time
ms
20 max
Operating modes
Manual or Automatic, selectable from terminal block
External Relay control
2 N.C. contacts (20 mA; 24 Vdc)
Number of connectable
barriers
1 (with 2 PNP safety static outputs)
Connections
Terminal block with protection against reversal of
polarity
Status indicator
LED
Power On – Barrier status – Fail
Max. length of connections
m
100
Operating temperature
°C
0 ÷ 55
Enclosure protection rating
IP 20
Terminal block protection
rating
IP 2X
Fastening
Fast attachment to rail according to EN 50022-35
Dimensions (h x w x d)
mm
99 x 22,5 x 114,5
Weight
g
150
B10d
800.000
Device lifetime
20 years
Safety level
Type 4
IEC 61496-1:2004
IEC 61496-2:2006
SIL 4
IEC 61508:1998
SILCL 4
IEC 62061:2005
Cat. 4
ISO 13849-1 : 2006
Load
Number of
Commutations
PFHd *
DCavg #
MTTFd #
PL #
CCF #
2A@230Vac
1 every 30s
2,64E-08
98,92%
26,06
d
80%
1 every min
1,55E-08
98,85%
50,29
e
80%
1 every hour
4,93E-09
97,24%
100,00
e
80%
1 every day
4,77E-09
96,89%
100,00
e
80%
0,5A@24Vdc
1 every 30s
4,86E-08
98,96%
13,28
d
80%
1 every min
2,64E-08
98,92%
26,06
d
80%
1 every hour
5,11E-09
97,51%
100,00
e
80%
1 every day
4,78E-09
96,91%
100,00
e
80%
Table 4
* IEC 61508
# ISO 13849-1

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2.7 STATUS INDICATORS / FAULT DIAGNOSIS
2.7.1 Status indicators
LED
MEANING
IN
FAIL
GUARD/BREAK
GREEN
RED
RED / GREEN
ON
ON
Red
Power on TEST
OFF
OFF
Red
Barrier INTERCEPTED, outputs in OFF
ON
OFF
Yellow
Barrier FREE, output in OFF (Module
waiting for RESTART)
ON
OFF
Green
Barrier FREE, outputs in ON
Table 5
!
2.7.2 FAULT DIAGNOSIS
LED
MEANING
IN
FAIL
GUARD/BREAK
GREEN
RED
RED/GREEN (pulses led Red)
OFF
ON
(2 pulses)
Internal fault
OFF
ON
(3 pulses)
Internal relays fault
OFF
ON
(4 pulses)
K1K2 external relays
fault
OFF
ON
(5 pulses)
User configuration
failure
OFF
ON
(6 pulses)
User configuration
changed without
system restart:
Switch off and restart
the module to solve
the problem. At the
switch on verify the
new user
configuration.
OFF
ON
(7 pulses)
Possible overload or
SYSTEM STATUS
connection error
Table 6
!If it is not possible to clearly identify the malfunction and to to remedy it, stop the machine and
contact the M.D. MICRO DETECTORS's Assistence Service.

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2.8 PERIODIC TESTS TO DO EVERY YEAR

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2.9 GUARANTEE
M.D. Micro Detectors warrants that each SB400 unit in new ex-factory condition, in conditions of
normal use, is free of defects in the materials and of manufacturing defects for a period of 24
months.
In this period, M.D. Micro Detectors undertakes to eliminate any faults in the product through
repair or replacement of the faulty parts, completely free of charge as regards material and labor.
However, M.D. Micro Detectors reserves the right to replace the entire faulty appliance with
another equivalent appliance or with the same characteristics instead of repairing this.
Validity of this warranty is regulated by the following conditions:
• The user must inform M.D. Micro Detectors of the fault within 24 months from the date of
delivery of the product.
• The appliance and its components must be in the conditions in which they were delivered by
M.D. Micro Detectors.
• The serial numbers must be clearly legible.
• The fault or defect has not been caused directly or indirectly by:
– Improper use;
– Non-compliance with instructions for use;
– Carelessness, inexperience, incorrect maintenance;
– Repairs, modifications, adaptations not carried out by M.D. Micro Detectors personnel,
tampering, etc.;
– Accidents or impacts (also due to transportation or causes of force majeure);
– Other causes not to be ascribed to M.D. Micro Detectors.
Repairs will be carried out at the M.D. Micro Detectors laboratories to which the material must be
delivered or dispatched: transport risks and the risks of any damage or loss of the material during
shipment are the responsibility of the user.
All products and components replaced become the property of M.D. Micro Detectors.
M.D. Micro Detectors does not recognize any other warranties or rights except for those
specifically described above; therefore, no claims for damages may be submitted for expenses,
interruption of business or other factors or circumstances in any way related to failure of the
product or of one of its parts.
Do not dispose of WEEE as mixed urban waste, arrange separate collection.
Contact the appropriate authorized collection points or the
manufacturer. (2012/19/UE)
Precise, complete compliance with all the rules, instructions and prohibitions indicated in this
handbook is an essential requirement for correct functioning of the safety interface.
M.D. Micro Detectors therefore declines any responsibility for all and anything resulting from
failure to comply, even partially, with such indications.
Characteristics subject to change without notice.
Total or partial reproduction is forbidden without the prior authorization of M.D. Micro Detectors.