Engl
ish
Appendix H: Manufacturing a VACIE / Rack building
55
ECU – PA audio connection:
The shield (GND) of the audio line cable between ECU and PA should only be connected to the
ECU; leave the GND wire disconnected on the PA line inputs.
ECU error inputs:
Connect below component error output contacts to the following ECU error inputs:
ECU Mains error input:
• PA – 230 VAC error contact (NO / when powered from 230 VAC & 48 VDC)
• C48 – 230 VAC error contact (NO / when powered from 230 VAC)
• circuit breaker error contacts, if used (NO when circuit breaker set to ON)
ECU C48 error input:
• C48 – 48 VDC input error contact (NO / when batteries are connected & charged)
• C48 – 48 VDC output error contact (NO / when 48 VDC is present on DC outputs)
ECU External error input:
• PA – fault relay error contact (NO / when internal PSU(’s) and amplifier modules are OK)
• Redundancy module – error contacts (NO)
4.7 kOhm
ECU mains fuse
error input
Circuit breaker
error contacts
PA 230 Vac
error contact
PA 230 Vac
error contact
4.7 kOhm
4.7 kOhm
ECU 48 Vdc
error input
C48 48 Vdc
input error contact
C48 48 Vdc
output error contact 4.7 kOhm
4.7 kOhm
ECU external
error input
Redundancy module
error contact
PA fault
error contact
4.7 kOhm