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4.
Querying the operating and switching state
An external proximity switch (inductive sensor GN 893.1 / GN 893.2 / GN 893.3) is
provided for querying the operating and switching state. It is bolted to the side housing of
the power clamp and the plug is connected to the power circuit.
Operating the unit with an incorrect or an excessive voltage can cause short circuits and
personal injuries. To ensure trouble-free operation, the maximum ambient temperature
must not exceed 80 °C. If the ambient temperature is outside these limits, a special sensor
must be used.
4.1 LED-Display
green = Operating voltage, red = Switching state closed, yellow = Switching state open
5.
Setting the clamping force
Caution: Fingers may be crunched or squeezed when setting the clamping arms.
Do not reach into the clamping zone of the clamping arms while the clamp is being
operated. If work is required at the clamping tool, the compressed air supply must
first be disconnected.
The clamping force is set via a special cam mechanism which, when the clamping
position (0°) is reached, delivers the maximum clamping force. A self-locking mech-
anism of the clamp acts in this position. Once reached, the clamping force is also
kept up if the pressure drops.
5.1 Setting the clamping force GN 864
·
Disconnect the compressed air supply to the clamp
·
Bolt and tighten contour piece or pressure screw to the clamping unit
·
Other setting steps as shown in the following diagrams:
Operating pressure 6 bar
20
Turn
Setting
(degrees)
platelet
0°
0
149°
0.50
192°
0.70
213°
0.80
40
Turn
Setting
(degrees)
platelet
0°
0
224°
1.10
274°
1.30
324°
1.60
5.2 Setting the clamping force GN 866
8
1
Positioning.
2
Close clamp.
3
Close pressure screws or place
setting platelets in the moving
arm until contact is made with
the workpiece.
4
Open clamp until end
position is reached.
5
Screw in pressure screws
as shown in table or insert
setting platelets.
Clamping
force
(N)
0
≈ 810
≈ 1220
≈ 1620
Clamping
force
(N)
0
≈ 2810
≈ 3880
≈ 4960
32
Turn
Setting
(degrees)
platelet
0°
0
222°
0.90
247°
1.00
296°
1.20
50
Turn
Setting
(degrees)
platelet
0°
0
262°
1,30
324°
1,60
401°
2,00
Fix the lower screws at
a pre determined figures.
Place the sheet to hold.
Clamping
force
(N)
0
≈1460
≈2190
≈2920
Clamping
force
(N)
0
≈ 3250
≈ 4880
≈ 6510
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