Siemens ST950 Handbook page 27

Note 1: The power ratings in table 3 above allow for the additional losses in the
transformers required (described below). These power ratings are indicative for the
purpose of selection of the correct size of dimming transformer.
If using a 48V Transformer kit, the following are the maximum connections that may be
made:
48V AC 50VA Transformer
2 Red/Green Nearside if using audio/tactile equipment OR
3 Red/Green Nearside if audio/tactile equipment is not being used OR
6 Demand Indicators
48V AC 160VA Transformer
6 Red/Green Nearside if using audio/tactile equipment OR
10 Red/Green Nearside if audio/tactile equipment is not being used OR
20 Demand Indicators
3.6.1 Controller Power
Typical supply requirement for a controller including dimming transformer (excluding
lamp loads, detectors and OTU) is:
Typically, 47W (Depends on cards fitted. A fully equipped 32-phase controller
requires a maximum of 97W.)
Siemens SLD4 detectors require 1.5W per unit
Siemens ST4R/ST4S detectors require 2.4W per unit.
Sarasota MTS36Z (2 channel) or MTS38Z (4 channel) detectors require 3W per
unit. (N.B. The power consumption is the same for both 2 and 4 channel units.)
Microsense detectors require 6W per unit.
The controller Elexon codes for Siemens products are defined in the Siemens Elexon
Codes document 667/RE/29050/000.
3.6.2 Lamp Drive Capability
The following table gives the lamp drive capability of the controller as a whole, each
'Phase Driver' (or 'Lamp Switch') card and each aspect. The 'Watts' and 'Lamps'
columns are equivalents for the currents shown based on a 230V supply.
It must be noted that up to date information for Helios LED and Nearside units and be
found in the Helios General handbook 667/HB/30000/000.
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Version
Last Editor
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Copyright © Siemens plc 2015. All Rights Reserved.
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Paul Cox
ST950 General Handbook
Mobility Division, Traffic Solutions
Sopers Lane, Poole, Dorset, BH17 7ER
Page 27 of 107
Status Issued
Date 16-Jul-2015
Document No. 667/HB/46000/000
Mobility is a division of Siemens Plc