INSTRUCTION MANUAL DAAB AUTOMATIC CONTROLL UNIT EP104 4.08
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Instruction manual edition 1 for EP104 version 4.08
• Load guard
The load guard can be used in two different ways.
•
With certified personal protection – fixed upper and lower limits and adjustable normal power
•
Without certified personal protection – an adjustable upper limit only
The automatic control unit is initially configured for certified personal protection. If the application requires certified personal
protection with a load guard, you will need to check the normal power of the electric motor and enter it into the system.
If the application does not require certified personal protection with a load guard, you can disable the function by setting the
normal power to 0. In this case, the load guard is not certified for personal protection.
In this mode, you can set your own upper limits for the load guard. There is an upper limit for the closing movement and an
upper limit for the opening movement.
The load guard will only work properly if the door and all moving parts are free to move easily throughout the entire
movement.
!
Note that the load guard never replaces other safety circuits such as safety edges for example.
With certified personal protection – setting normal power in the load guard
The load guard is configured separately for each motor by reading the motor power during operation.
Read the normal power in C231 for motor 1 and C241 for motor 2. Change the normal power setting (initial value 0.20
kW) to the power used on average by the motor, in C230 and C240 respectively. The permitted range is 0.12-0.35 kW. The
load guard will be activated when the load is 0.25 kW above the setting. Example: C230=0.20 kW means an upper load
limit of 0.45 kW. There is also a lower limit so that it is impossible to set the normal power too high by mistake. This lower
limit is 0.10 kW below the setting. Example: C230=0.20 kW means a lower load limit of 0.10 kW. In other words, personal
protection will only work if the power used by the electric motor remains reasonably constant. The lower limit has a fixed
delay of 4 seconds to prevent the load guard activating when the door is swinging shut, momentarily using insufficient
power. The delay for the upper limit is in channel C211 and can be set at max. 0.06 seconds for personal protection.
!
The specified normal power applies to opening and closing movements.
If the fixed limits result in excessive crushing force, you can adjust the crushing force by reducing the limit settings
in C232, C242 for the opening movement and C233, C243 for the closing movement. The initial value for these channels
is 0.60 kW – you can reduce this value to a limit of your choice. In that case, the load guard is activated at the lower limit
by the normal power setting (C230, C240) -0.10 kW and by the limit you set in C232, C233 and C242, C243. The values in
the above channels must be less than the normal power setting 0.25kW.
If the following criteria are not all met, doors that fold or open against solid walls can only be certified on safety grounds
if other personal safety measures are used.
• The power read from the display must not exceed 0.4 kW for the opening and closing movements.
• The load guard delay in channel C211 is set to 0.06 seconds or less.
• The load guard connection delay in starts using channel C212 is set to 2 seconds maximum.
• The reverse delay following the activation of a safety edge or a load guard must not be set to longer than 0.2 seconds
in C493.
Without certified personal protection – setting upper limits in the load guard
!
Set the normal power to 0.00 kW in channel C230 for motor 1 and 0.00 kW in channel C240 for motor 2.
With these settings, the load guard is not certified for personal protection.
There is no lower limit – only an upper limit for high load. Read the values in C231 and C241 and add 0.25kW. Specify
this value as a default setting in C232 for opening and C233 for closing movement for motor 1, and in C242 and C243 for
motor 2. Check that the crushing forces are not too high and not too low and that the door opens and closes without the
load guard reversing or indicating overload, see Indications.
Reverse delay when the load guard is triggered
When approved personal protection is used, this time can be set at max 0.2 seconds, but without personal protection it can
be set to max 2 seconds. Gentler reversing of the door can be obtained by increasing this time. Note that this time also
applies with activated safety edge. Select channel C493 and set a suitable delay.
!
Be careful when increasing the delay in C493, as this may increase the crushing forces and negate the safety settings
on which the type approval was based.
Summary of Contents for EP104
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