61
ED50
01-2020
DL4615-001
dormakaba ED50 Installation Instructions – Fine cover
Chapter 17
17.1 Set power fail closing speed
17 Power fail closing speed
1
Power fail closing
speed
potentiometer
2
Control board
Fig. 17.1.1 Power fail closing speed potentiometer
1
2
o
1
2
Fig. 17.1.2 Power on switch
1
Power on switch
2
Terminal board
17.1.1 Power fail closing speed
potentiometer.
• Single turn
• Factory setting: fully CCW
• CCW increases closing speed.
• CW decreases closing speed.
• 3/32" [2-3 mm] flat blade screwdriver
required for adjustment.
17.1.2 Setting door closing speed upon
power failure.
1. Turn power switch OFF.
2. Manually open door to 90° angle and let
it close.
3. If door closes in less than 5 seconds, turn
potentiometer 1/4 turn CW and retry
test.
4. Continue retrying test after
potentiometer adjustment until the door
closing time is a minimum of 5 seconds.
NOTICE
Error message E73:
If door closes in less than three
seconds, error message
E 73
(System error 3, braking circuit) will
be displayed.
Reference: Appendix B,
Troubleshooting.
TIPS AND RECOMMENDATIONS
Minimum 5 second closing time
is
required to meet requirements of:
• A117.1, Accessible and Usable
Buildings and Facilities,
Section 404.2.7.
• 2010 ADA Standards for
Accessible Design,
Section 404.2.8.