E844 3PH 15
532315 - Rev.B
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2
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3
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SAFE CL/ OP
SAFE CL/ OP
GND
GND
GND
TEST OUT
+24V
+24V
+24V
+24V
+24V
+24V
TEST OUT
TEST OUT
Tr
ansla
tion of the orig
inal instruc
tions
ENGLISH
8. ACCESSORIES
8.1 CLOSING PHOTOCELLS
!
Photocells are additional type D detection devices
(according to EN 12453) that reduce the likelihood of
contact with the moving leaf, but they are not safety
devices according to standard EN 12978.
i
Use photocells with a NC relay contact. If multiple
photocells are used, the contacts must be connected
in series.
Position and connect the photocells as shown in
according to their required use:
SAFE CL
Photocell active during closing
SAFE OP
Photocell active during opening
Each SAFE input to which photocells are connected
has to be configured in programming:
functions
Sc
/
So
=
PH
i
The action carried out when the photocells are trig-
gered depends on the operating logic selected.
■
FailSafe
Failsafe is a functional test that is carried out before a
movement. It consists of momentarily interrupting the
power supply to the devices and checking the change
in status of the input.
If the test fails, the board prevents the automation
from moving (error
05
).
To carry out the test, connect the negative of the
transmitter to the TEST OUT terminal.
To enable/disable the failsafe, see programming
function
FS
.
8.2 SENSITIVE EDGES
!
If the sensitive edge is used to protect against a
hazard, it must comply with standard EN 12978.
The E844 3PH board has two inputs for connecting
sensitive edges that are active during closing (SAFE
CL) or during opening (SAFE OP).
The activation of a sensitive edge causes the direction
of movement to reverse, which can be:
-
complete if
iP
=
no
in programming
-
partial (3 s) if
iP
=
Y
in programming
The SAFE CL and SAFE OP inputs can be configured to
connect the following types of devices:
-
with NC contact (
So/Sc
=
nc
)
-
1 resistive sensitive edge 8.2 kΩ (
So/Sc
=
1r
)
-
2 resistive sensitive edges 8.2 kΩ (
So/Sc
=
2r
) con-
nected in parallel
DO NOT connect photocells if the SAFE input is con-
figured to connect a sensitive edge.
i
By default, the SAFE CL and SAFE OP inputs are con-
figured to connect resistive type sensitive edges. If
one or both are not used, set function
So
and/or
Sc
=
nc
and bridge with the common contacts (GND
terminal), otherwise they would be active.
1. Configure the input to which the sensitive edge is
connected according to the type used (functions
So/Sc
in programming).
2. If the connected device requires a functional test
to be carried out, use the Test OUT terminal. Refer
to the instructions that come with the device for
connecting it.
■
FailSafe
Failsafe is a functional test that is carried out before
a movement.
If the test fails, the board prevents the automation
from moving (error
05
).
To enable/disable the failsafe, see programming
function
FS
.
3
■
1 pair of photocells
■
2 pairs of photocells
