ECO REFERENCE MANUAL
11-4
EG
EXAMPLE 4
MOTOR THERMISTOR PROTECTION AND SPEED SETTING BY DC SIGNAL
A fan is to be speed controlled using a potentiometer to provide the control signal. A thermistor
is installed in the fan motor to obtain optimum motor protection
All settings based on factory settings with the following exceptions :
PARAMETER CHANGES FROM FACTORY DEFAULTS
SETTING DESCRIPTION
P006 = 1 SELECT ANALOG SETPOINT
P007 = 0 P007 = SELECT RUN/STOP FROM TERMINALS
P087 = 1 SELECT MOTOR THERMISTOR PROTECTION
L1
20
9
5
3
4
L2 L3
VUW
FUSES
M
A
MICROMASTER Eco
MIDIMASTER Eco
FAULT CONTACT
CLOSED = HEALTHY
19
MAIN CONTACTOR
0-10V DC
B
15
14
2
C
+
-
DIP SWITCHES
L1
L2
L3
N
PE
ITEM DESCRIPTION
A RUN/STOP SWITCH
B 0 - 10V DC SPEED SETTING SIGNAL
C MOTOR THERMISTOR
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