Parts Identifications
PAGE 2 MC5408 | STANDBY AMPLIFIER CHANGEOVER UNIT
S/BY AMP. CHANGEOVER
+
-
DC 24V
500mA
AMP. FAULT DETECT TRIGGER OUT
100V
IN
100V
COM
100V
100V
COM
COM
IN OUT
COM
AMP 1
OUT
100V
IN
100V
COM
100V
100V
COM
COM
IN OUT
COM
OUT
100V
IN
100V
COM
100V
100V
COM
COM
IN OUT
COM
OUT
100V
IN
100V
COM
100V
100V
COM
COM
IN OUT
COM
AMP 2 AMP 3 AMP 4 AMP 5 AMP 6 AMP 7 AMP 8 STANDBY
AMP
IN
100V
COM
LINK
IN
OUT
CASCADE
1 2 3 4 5 6 7 8 S/B C
DUTY AMPLIFIER INPUTS
PLEASE OBSERVE POLARITY
TO ZONE SELECTOR
AC3801
S/BY IN
WIRING CONNECTIONS
AMP.IN
AMP.OUT
OUT
IN
CASCADE LINK
DUTY AMP
S/BY AMP OR SPEAKERS
1 2 345678
STANDBY AMPLIFIER CHANGEOVER
MODE
MANUAL
CHANGEOVER
PRIORITY
POWER
STANDBY FAULT
STANDBY AMPLIFIER CHANGEOVER
EXTERNAL
12
Front View
MC 5408
Rear View
3
4 5 6 7 8
1. LED INDICATORS
2. CHANGEOVER MODE BUTTON
LED Indicator for power and standby fault.
4. DC SUPPLY INPUT
3. CONTROL BUTTON
5. AMP. FAULT DETECT TRIGGER
6. DUTY AMPLIFIER INPUT / OUTPUT TERMINALS
Each switch represents a duty amplifier ( amp 1 to amp 8 ) respectively. Selecting any switch would lit up the LED
indicating that particular duty amplifier has been switched and the standby unit has taken over its role as duty unit.
If more than one switches is pressed, the amplifier with lower number of assignment would have priority over the higher
one, thus preventing overloading of the standby pack. It is recommended that only one switch is pressed at any one
time. ( Priority 1 : highest )
It is recommended that DC 24V supply with regulated output is connected to the unit. ie. Kodio PS5424 24V regulated
DC power supply pack.
Outputs of amplifiers 1 to 8 is connected here and subsequently to other equipments such as speaker zone selector.
Please refer to "Connecting The Unit" for proper instruction.
7. STANDBY AMPLIFIER INPUT TERMINALS
8. CASCADE LINK TERMINALS
Use this port to connect to the outputs of the standby amplifier. Please ensure correct polarity in termination.
If 2 or more MC5408 are to be installed, link each of the units via this terminal. Kindly follow the arrow as indicated for
linkage.
Amplifiers with fault sensors. eg QP2000 series has fault contacts, which shall be connected to this port.
Mode button to select manual operation or remote trigger changeover.
