Monarch NICE7000 - 48 V EPS Principle Diagram; 48 V EPS Circuit; Shorting PMSM Stator

5 System Commissioning and Functions NICE7000 User Manual
- 90 -
Figure 5-7 48 V EPS principle diagram
R0
T0
L1
N
R1S1
4
3
21
65
43
2
1
6
5
R
S
T
U
V
W
SC (safety contactor) SW (RUN contactor)
Motor
NICE7000
X20
2221
UPC (UPS feedback)
R'
S'
T'
N
M
Connected to 220 V power
when 48 V EPS is used
Figure 5-8 48 V EPS circuit
110 VAC
Battery
power unit
220 VAC
220 V
48 V
+
-
0 V
UPC
UPC
JUP
SC
QF1(10A)
R0
JUP
T0
21 22
A1 A2
Y6 M6
MCB
81 82
71 72
2
5
1
6
4
3
0
220
230
250
A1 A2
13 14
R1
S1
R'
N
TRF1
Battery
inverter unit
2. Shorting PMSM stator
Shorting PMSM stator means shorting phases UVW of the PMSM, which produces
resistance to restrict movement of the elevator car.
In eld application, an auxiliary NC contact is usually added to the NO contact of the output
contactor to short PMSM UVW phases to achieve the effect. It is feasible in theory but may
cause over-current actually.