- 5 -
3. Electric Wiring
3.1 Terminal box
There are main terminal box for motor main body terminals and thermistor, and auxiliary
terminal box for electric fan. Connect external wirings correctly and firmly. Connection with
pulse oscillator of motor side is connector-connection.
3.2 Connection diagram
Fig. 5 shows the standard connection diagram. In case that the temperature sensing element
(pt100Ω), temperature element (bimetal type) and electromagnetic brake are provided, all these
terminals are housed in the main terminal box and their terminal symbols are as shown in Fig.
6.
[Caution]
If electromagnetic brake and main power supply circuit are connected erroneously with terminals
of ptc thermistor (terminals MG1, MG2), temperature sensing element (terminals T1, T2, T3) and
temperature element (XB1, XB2), motor coil will be damaged caused by breakage of elements and
so, enough attention should be paid. Also, do not measure insulation resistance by insulation
resistance meter (Megger). If the power was turned on with wrong connection, carry out
disassembly and inspection.
Note : Cooling fan is single phase for EDM19 or less.
Therefore, it has 2 terminals of FU and FV.
Main
ter
m
in
al
A
uxili
ar
y
te
rm
ina
l b
ox
ptc thermistor
M
ain
te
rm
ina
l
Temperature
element
Temperature
sensing element
Ele. mag brake
Fig. 6
Fig. 5
Cooling fan
oscillator
