Recommended Procedure After An Indication To Check Calibration; Operating Modes; Orientation Of X- And Y-Axis; Rotational Operation - Bosch Professional GRL 500 HV Manual

OBJ_BUCH-1960-004.book Page 40 Thursday, October 13, 2016 12:38 PM
Recommended procedure after an indication to check
calibration
Step
1
2a
2b
3b
4b

Operating Modes

Orientation of X- and Y-Axis

The orientation of the X- and Y-axis is marked on the housing
above the rotation head.

Rotational Operation

The measuring tool operates with a fixed rotational speed
(600 rpm), which is suitable for use of a laser receiver.

Operating Modes Overview

– Automatic Levelling

– Single-axis Slope Operation

– Centre Line Mode
– Anti-Drift System (ADS)
– Line Control in Vertical Mode (GRL 500 HV)
Automatic Levelling

Automatic Levelling after Switching On

After switching on, the measuring tool checks the horizontal
position and automatically compensates for irregularities
within the self-levelling range of approx. 8.5% (5°).
GRL 500 HV: Once it has been switched on, the measuring
tool automatically detects the horizontal or vertical position.
To change between the horizontal and vertical position, you
can reposition it without switching it off.

Automatic Levelling during Operation

If after a position change the measuring tool is outside of the
self-levelling range of approx. 8.5 % (5°), levelling is no longer
possible and an error code is displayed (see "Correction of
Malfunctions", page 47).
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40 | English
Check levelling accuracy
Deviation in 30 m is within the maximum
permitted limits of ±1.5 mm:
Switch off calibration warning indicators
Deviation in 30 m is outside of the maxi-
mum permitted limits of ±1.5 mm:
Calibrate measuring tool
Check levelling accuracy
Deviation in 30 m after calibration is within
the maximum permitted limits of
±1.5 mm:
Work can be performed without loss of ac-
curacy.
Deviation in 30 m after calibration is still
outside of the maximum permitted limits of
±1.5 mm:
Have measuring tool checked by a Bosch
customer service agent
after switching on/during operation
The out-of-level indicator 37 flashes
during levelling.
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If the measuring tool is levelled, it constantly checks the level
position. Re-levelling is automatically performed if there are
any position changes. To prevent incorrect measurements,
see
the rotation of the laser beam stops during the levelling pro-
page
cess.
43
Single-axis Slope Operation
When the measuring tool is in the horizontal position, the X-
39
axis is automatically levelled while in single-axis slope opera-
tion.
The rotational plane can be turned around the X-axis in a
range of ±8.5%.
44
Note: If you want to perform a slope setting immediately after
43
switching on, you have to wait for the automatic levelling (see
"Automatic Levelling after Switching On", page 40). This pre-
vents incorrect measuring results.

Slope Setting

Slope setting is possible within a range of ±8.5%.
– Press and hold the slope button 18 or
/ 20 until the desired slope value is
shown on the display.
– Let go of the slope button 18 or 20
again.
The out-of-level indicator 37 flashes dur-
ing slope setting.
The slope mode indicator 41 lights up con-
tinuously.
– Simultaneously press the slope buttons 18 and
20.
Slope setting is deactivated.
Automatic levelling is activated (see "Automatic
Levelling", page 40).
If the slope range of ±8.5 % is exceeded, the slope mode indi-
cator 41 goes out and an error code is displayed (see "Correc-
tion of Malfunctions", page 47).

Centre Line Mode (see figure D)

In centre line mode, the measuring tool automatically tries to
find the centre line of the laser receiver by moving the rotation
head upward and downward.
– Press the centre line mode button 19 for approx.
2 s.
Automatic upward and downward movement of
the rotation head starts.
Search Sequence:
1. Rotation head pivots upwards to the stop.
2. Laser beam is switched on.
3. Rotation head pivots downwards.
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