Merrychef 402s - Manual (Page 28)

402s Ovens Pt. No. 32Z3522 Issue 6
28
LED Meaning Position
LED Off Inverter Off / No supply
Long On & Off (1sec) Power On / Ready
LED On steadily Inverter Running
Long On (0.5 sec)/ short Off General Warning
Very Short On & Off (0.1sec) Fault Condition
Displays and messages: LED status display
PRINCIPAL COMPONENTS: Hot Air Motor & Controller 2
LED
Power Terminals
Motor Terminals
Motor Controller
Provides an AC, 3-phase switched mode drive to
the convection motor and is controlled by a 0 - 10
Volt signal from the logic board. This allows the
motor to be adjusted from approximately 1500
rpm to 7000 rpm in steps of 5%.
Door Open
= 1500 RPM
Door Closed (not cooking) = 3500 RPM
Door Closed (cooking)
= as specified by
program or setting
Blue Black Brown
Wire
27
Wire 26
Fan
speed % Voltage
dc
RPM Condition
100% 10V 7000 Full
Speed
50% 5V 3000 Door
Closed
20% 2V 1500 Door
Open
Grey wire
to Motor
Blue 0V
Yellow 0-10V
Red +10V
V
Motor Speed and Logic board voltage table