A3.1.6.4 Fan Control - Oki OF5900 Maintenance Manual

R76-/R76-2

A3.1.6.4 Fan control

One of the following fan control modes is selected depending on the heater temperature
and system status.
(1) Stop
(2) 1/2-speed
(3) 1/4-speed
(4) Full-speed
To detect fan errors, the fan sensor (FANALM-P) is monitored in the full speed mode. The
fan sensor is not monitored for 3 seconds after the start of full speed operation taking into
account the fan sensor output determination time.
The fan sensor is not monitored when the fan is rotating at 1/2 or 1/4 speed or it is at halt.
OKIFAX 5700/5900
ON
OFF
ON 40mS
OFF 40mS
ON
OFF 40mS
ON
OFF
A3 - 14
40mS
40mS
120mS
40mS
0V
+24V
0V
+24V