Siemens ST750 - St750 Supply Requirements; Lamp Drive Capability; Table 1 - ST750 Supply Requirements; Table 2 - ST750 Lamp Drive Capability

ST750 GENERAL HANDBOOK
667/HB/33750/000 Page 23 Issue 6
2.4.1 ST750 Supply Requirements
The typical supply requirements for an ST750 are:
Power
(Watts)
Single (2 Phase) or Dual (4 Phase) Pedestrian Controller
40 W
Non-UK Controller (6 Phase)
50 W
Table 1 – ST750 Supply Requirements
These requirements exclude lamp loads, detectors and OTU but include dimming
transformer.
2.4.2 Lamp Drive Capability
Max Current
(Amps)
Max
Power
(Watts)
Maximum lamp current that the ST750 can
supply including short-term illumination, i.e.
red/amber.
8A
1840W
Maximum lamp load for each triac output on
the phase drive PCB.
4A @ 230V
or
4A @ 48V
920W
or
192W
Table 2 – ST750 Lamp Drive Capability
Output Type
Lamp Load
(Bright)
Maximum Quantity
per triac output
Lamp Monitoring
230V Halogen
63W
14
Yes (Max 8 per
sensor)
230V Siemens Helios
CLS (With LMF)
28W
32
Yes (Max 8 per
sensor)
230V Siemens Helios
CLS NLM (No LMF)
14W
64
No*
48V 40W Wait
40W
4
Yes
48V 65W Wait
65W
3
Yes
48V Siemens Led Wait
7W
>8
No