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Installation and Operation Manual
4.4.5. Nudging and Nudging-AUX relay
The nudging and nudging-AUX relays are energized
when there is an obstruction longer than the Nudging
time specified by the nudging potentiometer. These re-
lays are deenergized in normal operation or with no
power applied.
The nudging time can be set from 1 s up to 60 s. The
factory setting is 20 s. The volume of the nudging buzzer
can be set to a recommended level from normal to loud.
4.4.6. Nudging function
The interruption time of the light curtain is monitored.
When this time exceeds the defined nudging time, the
nudging relay will be energized and a warbling buzzer
will sound. The nudging time can be adjusted by the cor-
responding nudging time potentiometer. Factory setting
is 20 seconds. The volume of the nudging buzzer can
1)
Nudging time is adjusted using the Nudging Time potentiometer. Factory default is 20 seconds.
2)
The nudging output is held for 5 seconds after the obstruction is removed to let the door close.
Figure 10. Nudging timing diagram
Specifications of the Nudging function:
Designator
Nudging time
Nudging Hold Time
Nudging Status Indicator
Nudging Buzzer
© CEDES
Min.
Max.
Comments
1 sec.
60 sec. Logarithmic adjustment by potentiometer. Factory setting to 20s.
4 sec.
6 sec. Fixed, Time nudging remains active after light curtain becomes clear
-
-
Green LED is ON when nudging is active
Warbling tone when nudging is active. Volume adjustable via a po-
-
-
tentiometer. Turn OFF using the Nudging Buzzer ON/OFF switch.
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be adjusted with a potentiometer. Factory setting is
maximum volume.
American / Canadian Nudging:
In some elevator controllers, it is desirable to drop the
"Light Curtain" contact after nudging triggers. In other
cases, it is not necessary. This issue was discovered in
Canada and therefore the switch is dubbed the Ameri-
can / Canadian nudging option.
•
American Version – Light curtain relay drops for the
duration of the obstruction
•
Canadian Version – Light curtain relay re-picks
when nudging starts
Important
The nudging relay and nudging-AUX relay contact rating
is 250 VAC / 8 A, 125 VDC / 0.5 A, 30 VDC / 8 A, min. 5
VDC / 10 mA. Use a pilot relay if switching 125 VDC
loads that exceed 0.5 A.
cegard/Max-NT
9
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