ZIEHL-ABEGG ZA dyn 4C, Original Operating Instructions, Page: 77 / 224

11 Open loop operation (operation without encoder)
Features of open loop operation:
•
Distance-dependent deceleration not possible
•
Possible communication with elevator
‘
control:
–
Standard (digital inputs and outputs)
–
DCP1, DCP3
–
CANopenLift (Velocity Mode)
• Round speed pro
fi
le journey not possible
• This may cause excessive heating of the motor
• Lower positioning accuracy than in closed loop operation
• Worse travel behaviour than in closed loop operation
• maximum travel speed: 1,0 m/s
11.1 Start-up
Step 1 Change operator level in the
Startup
menu
• USR_LEV = Advanced
Step 2 Enter parameters in the
Motor name plate
menu
Motor type
•
MOT_TYPE = ASM
Technical data
The values correspond to the speci
fi
cations on the motor name plate
•
n = Nominal speed [rpm]
• f = Frequency [Hz]
• p = Number of pole pairs (value is calculated; entry not possible)
•
I = Nominal current [A]
•
U = Nominal voltage [V]
• P = Nominal power [kW]
• Cos phi = Power factor
•
TYP = Circuit type [Y/]
Step 3 Checking plausibility of n:
1. Calculation of the speed n
syn
of the magnetic
fi
eld in the motor winding.
n
syn
= f x 60 / p
2. Comparison of nominal speed n with speed n
syn
Depending on the pole pairs (see parameter p in the Motor name plate menu), the following
difference must result between n
syn
and n:
Number of pole pairs (p) Difference n
syn
- n [rpm]
2 80
–
120
3 50
–
80
3. If the calculated difference is outside the range speci
fi
ed in the table, the nominal speed n
must be calculated using the formula in the table below and entered in the
Motor name plate
menu
Number of pole pairs (p) Calculation of nominal
speed n [rpm]
2 n=n
syn
- 100
3 n=n
syn
- 65
Step 4 Activate open loop operation in the
Rotary encoder & BC
menu
•
ENC_TYP = No ENC
Assignment of the parameter ENC_type to the No ENC function activates open loop operation.
Original operating instructions
ZAdyn4C
Open loop operation (operation without encoder)
R-TBA12_01-GB 2104 Index 012 Part.-No. 00163371-GB
77/224
1
1
O
p
e
n
l
o
o
p
o
p
e
ra
ti
o
n
(o
p
e
ra
ti
o
n
w
it
h
o
u
t
e
n
c
o
d
e
r)