Data Sheet for Product

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Update: http://www.siemens.com/gamma-td UP 258E22, UP 258D12, UP 255D21 Siemens AG

Building Technologies Division

ã Siemens AG 2015 Control Products and Systems

January 2015 Subject to change P.O. Box 10 09 53, D-93009 Regensburg

Technology / model

Location / Function of the Display and Operating Elements

A1 Device

A2 Fixing clamps

A3 Detector lens

A4 Programming button

A5 Shade

A6 Bus terminal

A7 Design ring

A8 Programming mode LED behind lens

Product documentation

Additional information like operating and mounting instruction, application program descrip-

tion, Product database, additional software, product image, CE declaration etc. is available

here:

http://www.siemens.com/gamma-td

Notes

Safety

DANGER

· The device must be mounted and commissioned by an authorized electrician.

· When connecting the device, it should be ensured that the device can be isolated.

· The device must not be opened.

· For planning and construction of electric installations, the relevant guidelines, regulations and

standards of the respective country are to be considered.

Mounting

à Brightness measurement in particular

The daylight measurement determines an average brightness value in the room, which can differ from

the brightness on the worktop. You should therefore avoid mounting sites with extreme light ratios.

If the detector is fitted near lights with a high proportion of indirect light, the artificial light level at the

detector mounting point must not exceed the wanted nominal lighting level in the room. This can be

compensated by increasing the separation between the light cone and the detector. For constant lighting

control, direct artificial light on the detector should be avoided.

It is recommended to orientate the programming button of the device to the window, if possible. With

increasing mounting height the sensitivity of the brightness measuring is reduced.