Assa Abloy SW300 Start-up: Spring Tension & Wiring Guide

13.1 Besam SW300 Spring Pre-tension

The spring pre-tension is factory set to EN 4. The closing torque (spring force) is adjusted by a hexagon nut placed at the end of the spring. Turning the nut clockwise increases the force.

One turn equals a torque change of approx. 7-9 Nm for PUSH and 4-6 Nm for PULL (approx. 7 turns from min. to max.).

13.2 Microswitch (only for Besam SW300)

Check and adjust the microswitch, controlling the lock kick at power failure.

13.3 Adjusting the Door Stop

1. Close the door.
2. Open the door to required open position, plus approx. 15 mm. Put a door buffer under the door.
3. When stop arm is on top of the operator, lift the door stop arm up and mount it on the splines, as close as possible to the stop block. Fine-adjust if necessary with the screw on the stop arm.
4. When stop arm is on the bottom of the operator, loose the stop arm locator and the stop arm. Mount the stop arm on the splines, as close as possible to the stop block. Mount the stop arm locator. Fine-adjust if necessary with the screw on the stop arm.
5. Close the door.

13.4 Auto-learn – Automatically Sets Back and Latch Check (Recommended)

This learning is performed by pushing the LEARN BUTTON (LRN).

• Switch on the electrical power (the operator will find its closed position) and make sure the LED is on.
• Before the learning procedure starts, make sure that the door has been properly closed i.e., not by force.
• A new learn must be carried out in following situations:
  • If any of the parameters SPRING PRE-TENSION and CLOSING TORQUE (CLTQ) are changed after performing a learn.
  • If any of the arm system DIP-switches are changed.
• A confirmation by pushing the learn button is enough in following situations:
  • If any changing of the MAT-dip.
  • When replacing any of the extension units.
  • When changing of "Locked with/without power".
  • When changing of "Lock 12/24V".
• Learn can be carried out with activation units and locks connected.
• The back-check will be automatically adjusted to 10° and 1 second before open position. The latch-check will be automatically adjusted to 10° and 1.5 seconds before closed position.

13.4.1 Push the LEARN BUTTON (LRN)

When the learn button is pressed the status LED starts to blink and will not stop until learn is concluded.

The learn cycle starts with sensor detection, during which the door will stand still. When the door starts moving the spring tension and door inertia are measured and the door open and close position is saved. When the learn is concluded the back-check, latch-check, opening time and closing time are calculated. The changed settings affect the behavior of the installation and must be verified.

13.4.2 Double Doors

For double doors, the MASTER door must be learned first and thereafter the SLAVE door. When the SLAVE door is learned, the MASTER door will open up to fully open position during the learning phase of the SLAVE door.

The doors can also be learned separately before connecting the sync cable. In case of astragal doors and separate learning, the MASTER door must be held open before the SLAVE door learn is carried out.

13.5 General Adjustment

1. Set the hold open time with the potentiometer on the control unit.
2. Adjust the opening speed (OPSP). Turning clockwise increases the speed.
3. Adjust the closing speed (CLSP). Turning counter-clockwise decreases the speed.
4. Refer to the "Guide for installers of Powered Pedestrian Swing Doors", document PRA-0006, for calculation of speed.
5. Connect the required activation units.
6. Check that the installation complies with AHJ (Authority Having Jurisdiction).

13.6 Connection of Activation Units and Accessories

See sensor manuals for mounting and adjustments. Protective device shall comply with EN 12978.

Activation Unit Connection Guide