5.4.1 Power failure

During power failure the operator acts as a door closer with controlled closing speed and a micro switch will make a lock kick to secure latching (only fire rated version and no Inverse installation).

5.4.2 Closing torque

To comply with authority requirements or to overcome over/under pressure the closing torque can be adjusted according to EN 1154 Door Closer, power size 4-5 for Pull and 4-6 for Push.

5.4.3 Extended closing torque (CLTQ)

If the potentiometer CLTQ is set to 0°, the door will close with normal spring power. If the potentiometer is turned clockwise, the motor will increase the closing torque. Extended closing torque will be reduced to zero:

• If the door mounted sensor presence detection is activated during the last 10° before closing.
• If the door mounted sensor presence impulse is activated in closed position or during closing (even if manually opened).

5.4.4 Power assist (POAS)

If the potentiometer POAS is set to 0°, the door gives no power assist. If the potentiometer is turned clockwise, the motor will give/increase power assist when the door is opened manually. The range of the POAS is depending on the spring pre-tension.

5.4.5 Push and go (PAG)

DIP-switch to select Push and Go, ON or OFF. Push and Go is available from any door position. Push and Go is not active in programme selector setting OFF.

5.4.6 Besam SW300 inverse (INV)

DIP-switch to select when inverse installation.

To be used for doors in emergency escape routs where the door has to open in case of fire alarm (smoke evacuation). The door is opened by spring force and closed by motor operation. If lock is used, the lock must fulfill the ELtVTR-standard.

5.4.7 Activation delay (AD)

This function requires a constant inner impulse for the specified time before the door will open. Fixed 2 sec. During closing the door will reopen immediately if impulsed.

5.4.8 Overhead presence detector (OPD), frame mounted

When an OPD sensor is mounted on the frame or operator cover just above the swing side of the door, it will–when activated–either keep the door open or closed. The sensor input is not sensitive during opening and closing. Lock-out signal is available as it is required by some OPD sensors for proper function.

• A closed door will not open, if the OPD detects activity in the field.
• An open door will not close, if the OPD detects activity in the field.
• During opening, the door will continue to open, even if the OPD detects activity in the field.
• During closing, the door will continue to close, even if the OPD detects activity in the field.
• The OPD is not active in program mode OFF, manually opened door or during battery operation (Power Save Mode).

5.4.9 Mat

Mat safety means that:

• A closed door will not open, if someone steps on the mat.
• An open door will not close, if someone steps on the mat.
• During opening, the door will continue to open, even if someone steps on the mat.
• During closing, the door will continue to close, even if someone steps on the mat.
• Opening impulses are prevented during closing, if someone steps on the mat.
• The mat is not active in program mode OFF, manually opened door or during battery operation (Power Save Mode).

5.5.1 KILL function

• During KILL the control will ignore all signals and close door(s) at normal speed.
• If impulse controlled KILL: The operator will resume normal operation after a KILL RESET. When manual RESET, jumper must be removed and reset button connected to terminal No. 8 and Ground.
• Or if state controlled KILL: When KILL signal is no longer active, operator will resume normal operation.

5.5.2 Function of locks

• The lock output is short circuit proof and can source a lock with 24 V DC, max. 600 mA. Lock function is active in programme selection EXIT and OFF.
• The control has an available output of DC for external locks.
• DIP-switches to select 12 or 24 V DC, locked with or without power.
• DIP-switch for lock release and potentiometer for opening delay.
• DIP-switch for lock kick to overcome binding in the locking device during closing (inactivated for Inverse door).
• Input to unlock signal from lock. Potentiometer for opening delay is to be set to max. As soon as unlock signal is received the door will start to open. The lock output signal shall be active low.
• If the door cannot fully close, the operator will perform a lock retry (once if manually, twice if automatically open).

5.5.3 Program selector (wall mounted)

Input for OPEN, EXIT and OFF (if no program selector, AUTO is default).

Note! In OFF-position the operator will comply with the Low Energy Regulation and the door mounted sensors will be disregarded.

5.5.4 Impulses

Input for OUTER impulse, KEY impulse and OPEN/CLOSE impulse.

5.5.5 OPEN/CLOSE impulse

The impulse will open the door and the door will stay open until a new impulse is given. If no impulse is given the door will close after 15 minutes. This can be made infinite by changing group of parameters.

OPEN/CLOSE impulse works only in program selection AUTO. Can be programmed for OFF and EXIT as well.

5.5.6 Power failure mode (backup batteries are installed) – optional

• In case of power failure, normal operation can be carried out with impulses from the KEY SWITCH.
• Two contacts are available for connection of 2 x 12 V batteries (NiMH).
• DIP-switch for monitoring of batteries is also available. Faulty battery will be indicated by the LED on the CU-ESD. If selected the relay on EXU-SA can give a contact information. An audible warning signal can be achieved by using the accessory board AIU. It is connected to the 24 VDC and plugged into the EXU-SA relay output terminal.
• During POWER FAILURE MODE the operator will finish the actual operating cycle and then switch of the battery supply. The battery powered operator can be reactivated to achieve a new operating cycle by an impulse on the KEY input.
• The operating mode during battery power can be changed from POWER SAVE to CONVENIENCE. During CONVENIENCE MODE the operator will work as normal until the batteries are discharged. The batteries are rechargeable and will be charged by the control unit in the operator. New, fully charged batteries can typically open and close a door max. 300 times in convenience mode. In power save mode the operator can stand-by in up to 1 week, waiting for KEY impulse.

5.5.7 Nurse and bed functionality

Connect an 1/0-switch to terminals 3 and 7 (KILL input) on the slave EXU-SI board. This will make it possible to open only the MASTER door (switch at 1), and both doors (switch at 0) if necessary, with an impulse (Key, Inner, Outer and Open/Close at the MASTER, and Inner and Outer at the SLAVE). Alternatively (only) booth doors can be open with the Open/Close impulse at the SLAVE, when the switch is at 1.

Note! How to connect KILL input is determined by chosen parameter group at the SLAVE, be sure that chosen group has KILL-Impulse configuration set to Normally Open.

If Push and Go is ON the bed functionality can also be achieved by manually pushing the slave door which will start the door to open automatically.

5.6.1 Presence impulse approach, door mounted

The presence impulse is active during fully open and closing. The sensor is mounted to the approach side of the door. Once the door is closed, the sensor is ignored and will not be active until the next impulse is received.

Note! When installed as a pair of doors, the presence impulse signal will re-open both doors. The sensor is not active in program mode OFF, manually opened door or during battery operation (Power Failure Mode).

5.6.2 Presence detection swing path, door mounted

When a sensor that is mounted on the swing side of a door detects an object, it will send a command to the control unit to stall the door. If the control unit has received a short signal from the sensor and there is still hold open time left on the control unit, the door will continue on its way open if the object has cleared.

The inhibit/blanking potentiometer can be adjusted so that the sensor will avoid detecting a wall or object near the full open position. Presence detection has a higher priority than presence impulse.

Note! When installed as a pair of doors the presence detection signal will stop both doors, except for double egress doors. The behavior for double egress doors can be changed.

5.6.3 Monitored safety sensors

Both presence impulse and presence detection can be monitored. If a sensor becomes defective, the operator will not accept any impulses and will then work as a manual door closer.

5.6.4 Relay output

A potential free contact COM/NO/NC used in the below four different way, where the first three are chosen by Parameter group.

• Error indication: For external error indication.
• KILL output: Used for distribute KILL-signal to other doorsets.
• Lock output: Used for control locks with other voltage than 12/24VDC.
• Door indication (HW-wired with jumper): Used for indicate an open or closed position of the door. The indication position is set by adjusting the inhibit/blanking potentiometer. For indication of closed door, adjust the Blanking potentiometer to minimum. For indication of open door, open the door by program select OPEN or any open-impulse, and adjust the Blanking potentiometer so that the Blanking LED is lit only in open position (or above desired position, just like blanking).