Kolver 032000 Operational Manual page 119

After each adjustment, it is possible to lock the nut with the clutch cover (sold separately). To place
properly this cover, you must remove the stopper ring #2, unscrew the adjusting nut #3, unscrew
and remove the front ring #1 and replace it with the clutch cover #35.
When the pre-set torque is reached, the KBL.../AR models automatically reverse the direction of
rotation until the operator releases the lever. The unscrewing will start approximately 0.5 seconds
after reaching the torque. The operator will release the lever only when the unscrewing has been
completed. .
To check the torque value we suggest the use of K5 or MINI K5 electronic torque tester.
4. Control unit and power supply
EDU1BL, EDU1BL/SG and EDU 1FR power supply and control units act as voltage transformer
and electronic torque controller.
The power supply, 90/260VAC-50/60Hz, is converted into 18-30V DC required by KBL series
screwdrivers through an electronic transformer with constant power of 120W.
KBL..FR models – 5 pin cable – use with EDU 1BL controller
EDU1BL is made especially to work in combination with KBL screwdrivers either lever or push
start, inline or pistol type. The motor is controlled by the board inside the screwdriver. The
screwdriver is connected to the controller through a 5 pin cable.
The electronic control circuit cuts the power supply to the motor in response to the clutch action as
soon as the pre-set torque is reached.
On the front panel of the control unit you can find the "A" knob, through which you can set the
speed: 1 corresponds to 60% and 10 corresponds to 100%.
You can also find a green led on the front panel of the control unit, showing if the controller is on or
off.
The temperature of the unit can normally reach 45°C.
On the back panel you can find a socket equipped with a fuse holder and on/off switch. To replace
the fuse just pull out the fuse holder and change the fuse.
KBL..FR models – 5 pin cable – use with EDU 1FR controller
EDU1FR is meant to work with FAB&RAF screwdrivers, but it can be used with KBL
screwdrivers, too.
On the front panel of the controller there are two knobs indicated with the letters "R" and "A".
Knob "R" is used to adjust the slow start option (ramp), but it's only enabled for FAB and RAF
screwdrivers, not for KBL.
Knob "A" is used to adjust the motor speed for nominal speed, i.e. speed as per ctg. data sheet, to
60% of nominal speed. "1" stands for minimum speed and "10" for nominal speed.
On the front panel you can also see two lights: the green one will light permanently when the power
is on, the red one will light only when the clutch "fires" indicating the preset torque has been
reached.
The temperature of the unit can normally reach 45°C.
On the back panel you can find a socket equipped with a fuse holder and on/off switch. To replace
the fuse just pull out the fuse holder and change the fuse.
Vers. 080920