Vacuum Pumps N 920 APE-W and N 920 APDC-B
Operation
Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19
31
Symbol
Interpretation
Meaning
E
Announcement of
completion
0 command cannot be
completed
1 command completed
? command unclear
S
Status message
For service only
V
Version number
e.g. 01.018
ni
Actual motor speed
Value [min
-1
]
ns
Nominal motor
speed
Value [min
-1
]
nl
Minimum nominal
motor speed
Value [min
-1
]
nh
Maximum nominal
motor speed
Value [min
-1
]
ii
operating current of
the motor
Value [mA]
ti
temperature of the
motor controller
Value [°C]
ei
Fault status
16 bit value
Tab. 15: Symbols
The symbols represent the ASCII codes of sequences of digits any
length. The controller processes input values only as whole num-
bers (integers).
Interface level
See p. 24
for pin assignment of the motor controller’s commu-
nication plug.
Parameter
Value
Rx KNF MBLC
Low: 0V…0.9V
High: 4.2V…5.2V
Tx KNF MBLC
Low: 0V…0.6V
High: 4.5V…5.2V
Tab. 16
