Suzhou Monarch Control Technology MCTC-CTB-A, User Manual, Page: 155 / 183

NICE3000 User Manual System typical application and adjustment
155
Mechanical parts are installed to the right position, and it won
’
t cause equipment j)
damages or personal injuries.
Encoder inspection 2)
Encoder feedback pulse signal is an important assurance for the system to fulfill a)
accurate control. It needs special inspection before adjusting.
Encoder installation is stable and wiring is reliable. b)
Encoder signal wiring and strong power circuit are set in separated grooves to prevent c)
from interference.
It would be better to introduce the encoder wiring from the encoder into the control d)
panel. If the wiring is not long enough and need connected to the ground, the extension
part should use shielded wire and the connection with the encoder
’
s original wire
should be better welded joint with electric iron.
Encoder
’
s shielded level requires controller
’
s one terminal connect to the ground e)
reliably.
Detailed wiring chart of encoder refers to section 3.2.3. f)
Check power 3)
Check user
’
s power before the system is power on.
The user
’
s power voltage between each phase should be within 380V
±
15%, and the
unbalance degree should not be over 3%.
The voltage between COM and the input terminal (CN3 24V)on the main control board a)
should be within DC24V
±
15%.
Check the specification of the main enter wire, and the capacity of switch should reach b)
the requirements.
If the system
’
s enter voltage is over the allowable value, it will bring devastating
consequences. So attention is required in inspection. Pay attention to the positive pole and
negative pole of DC power. If there
’
s phase missing in the system enter power part, please
don
’
t operate the lift.
Connection to the ground inspection 4)
Check the resistance between grounding terminal PE and the terminal as follows, a)
confirm whether it is infinite, if it is too small, check immediately
R
、
S
、
T and PE

U
、
V
、
W and PE

Main board 24V and PE

Motor U
、
V
、
W and PE

Encoder 15V
、
A
、
B
、
PGM and PE

f )
＋、－
Bus terminal and PE

Terminal of safe circuit, door lock, inspection circuit and PE

Check the resistance between the grounding terminal of all the electric part and power b)