Trailing Edge Clamp (TEC) Assembly

Commands | Description | NVS Parameters | Parts | Procedures

Commands

• getclamp
• putclamp
• act tec
• act tecul

Description

• Clamp the trailing edge of the plate on the drum.
• The TEC backbone installs and removes the clamps from the drum.
• The clamps are on the drum when there is a plate on the drum. They are attached to the TEC actuator when there is no plate on the drum. Unlike the LECs, the TECs are not fixed to the drum permanently.
• The backbone sits in the uppermost slot in the mounts at the ends of the drum.
• A locking bar with mushroom-shaped keys inside the TEC backbone is used to install and remove the TECs. To install the clamps on the drum, the backbone is lowered into place until the clamps contact the drum. The magnetic force from the clamps holds the clamps on the drum. The keyhole slots in the clamps are used to remove the clamps from the drum.
• Pneumatic cylinders controlled by the LU electronics drive the TEC backbone. The speed and force of the TEC and TEC lock actuators are controlled by flow restrictors and pressure regulators in a similar fashion to the drum roller. The force of the TEC backbone is regulated to prevent the bar from damaging the clamps in the event of misalignment.

NVS Parameters

AL module: coff, nms, ntl, nte, ppos, soff, sover

ALDLY module: te, teul

AL STATE module: te

Parts

For BOMs and assembly drawings, see
TS3 Engine Parts or TS3/8 Engine Parts or TS8 Engine Parts

• The TECs are held to the drum by 2 magnets. The clamps stick to the drum over the trailing edge of the plate and their location is determined by the plate size.

  The magnets in the clamps are affixed to steel plates with either the north or south poles of both magnets facing outward. Each clamp has a label that indicates which way the magnets are facing.

• Locking bar

  Slides back and forth inside the TEC backbone to lock the clamps to the backbone. The clamps are locked to the backbone when the locking pins (mushrooms) on the locking bar are inserted in the narrow part of the clamp keyholes. The clamps are unlocked when the locking pins are in the wide opening of the keyholes.

• Clamp cylinder assemblies

  Mounted at either end of the engine frame
  Provide slotted mounts to support the roller, leading edge, and trailing edge backbones

• Backbone reed switches
  59-3141 (magnet)
  15-3063 (sensor)

  Detect the extend and retract position of the backbone. The setup is the same as for all backbones.

  For each backbone, 1 magnet at each end of the backbone, and 2 sensors on the clamp plate assembly.
  Each magnet is attached to the backbone and the sensors are attached to the clamp plate assemblies.

• Pneumatic cylinders  to actuate the backbone
  One 2" x 13/4" cylinder on each clamp cylinder assembly and attached to the backbone by rod ends

  Adjust timing with flow control valves.
  Adjust down pressure with regulators.

• TEC lock/unlock cylinder—55-0065

Procedures

Adjusting the 3244 TEC backbone actuator speed
Adjusting the 3244 TEC backbone cylinder rod ends
Checking the pressure regulators on the 3244/3230 engine
Reed switch sensor adjustment procedure

Adjusting the TEC backbone actuator speed (TS4,TS8)
Adjusting the 3230(TS4),3244(TS8)TEC backbone cylinder rod ends
Adjusting the 3230(TS4),3244(TS8)TEC park position (ppos)
Balancing the Trendsetter 3230(TS4),3244(TS8) backbones