Clark Systems MVD1001 Manual de instalación - Página 6

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Mode selection

Detectors are normally supplied set to detect approaching vehicles travelling at speeds
greater than the threshold of 8.5 Km/Hr (position 0). This is the normal operating mode.
Other modes are available as shown in Table 2 which may be selected according to local
traffic engineering requirements. The bi-directional (both) mode is intended for shuttle
working applications.
Mounting
A bracket is available to facilitate mounting on the upper signal head bracket using an M10
nut and bolt (supplied with bracket). Most signal head brackets are pre-drilled with an
appropriate hole, if not a hole must be drilled.
The detector is fixed to the bracket using two M6 nuts (supplied with bracket). There are
two mounting positions. The upper mounting position should be used where the signal
head backing board protrudes significantly above the head, otherwise the lower positions
should be used. In all cases the radome of the detector should be visible above the
backing board. See Photograph 3.
Photograph 3 -
Installed Detector
(Detector fitted in 'lower'
position on bracket shown)
S00104101MVDHandbook.doc
July 2002
Position
Low Speed Threshold (Km/Hr)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Table 2 - Mode Settings
Vehicle Direction
8.5
Approaching
6.6
5.2
4.0
8.5
Both
6.6
5.2
4.0
8.5
Receding
6.6
5.2
4.0
Not Used
6