Specifications

ST900 Family General Handbook
667/HB/32900/000 Issue 12 Page 65 of 265
3.14.10 ELV Regulatory Sign Expansion Kit
The ELV Regulatory Sign Expansion Kit derives power from the controller mains
supply to power additional ELV regulatory signs.
This kit is required if the total number of regulatory signs to be driven from the
controller exceeds the HPU capacity of 8.
ELV Regulatory Signs must operate from 33 to 58VDC rectified supply, measured at
the ELV Regulatory Sign terminal block. For power budget calculations, ELV
Regulatory Sign Extension Kit loading is the same as for signs powered from the
HPU regulatory sign supply (7 Watts per sign).
ELV Regulatory Signs Expansion kit: 667/1/33070/000