107022-14 EN FR26 GLO 0100 Printed in Germany
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The two sensing units A/B are matched to each other by individual coding. Therefore, only connect a matched pair of
sensing units A/B (each has the same serial number) to a control unit. Failure to comply with these instructions will result in
improper product performance.
To ensure the proper operation of the FF-LS safety light curtain, 10 meters (132 feet) is the maximum cable length that may
be used for any application. However, a cable may be shortened, if necessary. Sensing units A and B are not matched to
the RS485 cable.
4.3
Electrical Power and the Control Unit
POWER APPLIED TO MACHINE CONTROL SYSTEM
Before intervention, turn off and disconnect power from FF-LS Series safety light curtain and machine.
Failure to comply with these instructions could result in death or serious injury.
The control unit FF-LS _ _ C provides electrical power to the sensing units A and B and uses 22 to 30 Vdc or 18 to 25 Vac
supply voltages. For DC voltages, any polarity is allowed. The EN 61496 (previously pr EN 50 100 - part 1) standard
mandates the use of a galvanic insulated power supply for type 4 protective equipment.
Use the electrical power supply units in Table 4-1 to ensure the necessary galvanic insulation of the FF-LS Series safety
light curtain. To ensure specified immunity to electrical noise, connect the earth terminal to the machine’s main earth
ground. Failure to comply with these instructions will result in improper product performance.
Table 4- 1 Power Supply Units (optional) Order Guide
Catalog Listing
Description
FF-LSZUS0606
Power supply, 115 Vac / 24 Vdc
FF-LSZUS0605
Power supply, 230 Vac / 24 Vdc
4.4
Connecting Machine Stop Control Outputs (
MAIN OUT
1 and
MAIN OUT
2)
POWER APPLIED TO MACHINE CONTROL SYSTEM
Before intervention, turn off and disconnect power from FF-LS Series safety light curtain and machine.
Failure to comply with these instructions could result in death or serious injury.
IMPROPER SYSTEM PERFORMANCE
Ensure two independent stop circuit relays have mechanically linked contacts to reliably detect a welded contact.
Failure to comply with these instructions could result in death or serious injury.
SAFETY RELAY CONTACT DAMAGE
Inductive loads generate high voltage transients that will degrade the life expectancy of the safety relay contacts. Use arc
suppression (resistor/capacitor) RC components to avoid contact damage. For Vdc interfaces, use varistors in place of RC
components.
Failure to comply with these instructions could result in product damage.
Summary of Contents for SYA14 Series
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