Display / Control Panel - Hazet 7280-2sTAC Operating Instructions Manual

• The third signal level – red flashing light, acoustic signal
and high-frequency vibration – indicates that the applied
torque is above the target value range. If the third signal
level is reached, the applied torque is too high. Stop the
screw action. Proceed according to the instructions for this
screw-joint: e.g. undo the screw and re-tighten it, or replace
it with a new one.
• The fourth signal level – permanent red light, permanent
acoustic signal and permanent vibration – indicates that
the applied torque is above the maximum permissible tor-
que range of the torque wrench with built-in angle gauge.
If the fourth signal level is reached, the screw action must
be aborted immediately. Failure to comply with these
instructions can result in (irreparable) damage to the torque
wrench with built-in angle gauge.
• If no further torque or rotation angle is applied after activa-
tion, the display alternates between the maximum value of
this action and an OK/Not OK message.
• The "Torque track" program displays the torque currently
being applied without specification of a target value or a
tolerance on the display. In this program, only the fourth
signal level is activated when the maximum permitted tor-
que value has been reached. The highest torque value for
this process (without validation) is displayed when no more
force is being applied.
• The torque wrench with built-in angle gauge can be pro-
gramed with „Direction of rotation: right (+)" and „Direction
of rotation: left (-)" in the „Torque peak" and „Rotation
angle" programs.
NOTE! In "Torque track" and "Peak" mode, the screw
action stops after 2 seconds if no torque is applied
during this time. In "Rotation angle" mode, the screw
action stops after 4 seconds if no torque is applied
during this time.
• Every screw action is stored in the memory with a corre-
sponding date and time.
• Pressing a key rotates the display (in order to read the
display regardless of direction of actuation).
• The torque wrench with built-in angle gauge switches off
automatically after the set "stand-by" time when it is not
being used.
• If necessary, a rotation angle check for torque tightening
and a torque check for rotation angle tightening can be
programmed in order to check the screw action and con-
nection. If a check function is programed, the second signal
level is only activated and the screw action is only evaluated
as OK if the relevant target value and check ranges overlap
with one another at the end of operation.
• The "Parameters" menu option allows you to save pro-
grams for various screw-joints. Activating a workflow ena-
bles these screw-joints (parameters) to be completed one
after another. The wrench display indicates the progress
of the workflow.
22
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Design and function
Signals table:
Signal levels
Level 1 (threshold value)
Yellow flashing light, acoustic
signal and
low-frequency vibration
Level 2 (within target value range)
Green flashing light, acoustic signal
and mid-frequency vibration
Level 3 (above target value range)
Red flashing light, acoustic signal
and high-frequency vibration
Level 4 (above max. torque)
Permanent red light, permanent
acoustic signal
and permanent vibration
Yellow light flashes once
on reaching the snug torque
start of angle measurement

4 . Display / Control panel

Torque unit Battery display
if applicable with
degree (/°) - Display Effective length
Memory display
+
rotation and
(or direction of rotation, snug torque and rotation angle)
Torque
Rotation
angle
Peak Track
v v
v v
v v
v v v
v
Tolerance
– Direction of
Torque target value