Optek C4101 - Page 41

Commissioning
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optek-converter C4101 Version 07.2009_1.2US, 23.07.2009
www.optek.com
Lamp voltage depends on cable length and sensor type. During operation, lamp
voltage at the lamp module has to be constant at 4.8 V (or 7.0 V when using
AF45 or AF46). The values in the following table apply to original cable sets only!
Standard cross section for lamp cables is 1.5 mm
2
. With longer cable sets, the
following lamp cables are used to minimize voltage losses:
• AF16, AF26, TF16-N > 150 m (820 ft.): 2.5 mm
2
(lamp voltage = 4.80 + 0.0108/m; resistance = 7.2 ohms/1000 m)
• AF45, AF46 > 50 m (164 ft.): 2.5 mm
2
Caution!
When cable sets are later shortened, prior to connecting the lamp module, lamp
voltage has to be reduced to the corresponding value to avoid overload.
Tab. 6 Lamp voltage depending on cable length
Cable set
lengths
standard
*
*. Cable sets length > 100 m (328 ft.) on request.
Lamp voltage [V] depending on connected sensor
and cable cross section
AF16, AF26,
TF16-N
AS16, AS16-BT AS56 AF45, AF46
m ft.
1.5 mm
2
1.5 mm
2
1.5 mm
2
1.5 mm
2
2.5 mm
2
0 0 4.80 4.80 4.80 7.00
2 7 4.84 4.84 4.82 7.04
3 10 4.86 4.86 4.83 7.06
5 16 4.90 4.90 4.86 7.11
10 33 4.99 4.99 4.91 7.22
15 49 5.09 5.09 4.97 7.33
20 66 5.18 5.18 5.02 7.44
25 82 5.28 5.28 5.08 7.55
30 98 5.38 5.38 5.13 7.66
35 115 5.47 5.47 5.19 7.77
40 131 5.57 5.57 5.24 7.88
45 148 5.66 5.66 5.30 7.99
50 164 5.76 5.76 5.35 8.10
60 197 5.95 7.74
70 230 6.14 7.87
80 262 6.34 7.99
90 295 6.53 8.11
100 328 6.72 8.24
Lamp
voltage =
4.80 +
0.0192/m
4.80 +
0.0192/m
4.80 +
0.011/m
7.00 +
0.0192/m
7.00 +
0.0108/m
Resistance =
12.8 ohms/
1000 m
12.8 ohms/
1000 m
12.8 ohms/
1000 m
12.8 ohms/
1000 m
7.2 ohms/
1000 m