Bit 13=1: The DC voltage in the drive’s DC link is too low or too high.
8.11.4.15 Bit 14, Current OK/Limit Exceeded
Bit 14=0: The motor current is lower than the current limit selected in
parameter 4-18 Current Limit
.
Bit 14=1: The current limit in
parameter 4-18 Current Limit
is exceeded.
8.11.4.16 Bit 15, Thermal Level OK/Limit Exceeded
Bit 15=0: The timers for motor thermal protection and thermal protection are not exceeded 100%.
Bit 15=1: 1 of the timers exceeds 100%.
8.11.5 Bus Speed Reference Value
Speed reference value is transmitted to the drive in a relative value in %. The value is transmitted in the form of a 16-bit word. The
integer value 16384 (4000 hex) corresponds to 100%. Negative figures are formatted using 2’s complement. The actual output fre-
quency (MAV) is scaled in the same way as the bus reference.
Actual output frequency
STW
Follower-follower
Speed reference
CTW
Master-follower
16 bit
e3
0b
a2
76
.1
1
Illustration 80: Actual Output Frequency (MAV)
The reference and MAV are scaled as follows:
Reverse
Forward
Par.3-00 set to
(1) -max- +max
Max reference
Max reference
Par.3-00 set to
(0) min-max
Max reference
Forward
Min reference
100%
(4000hex)
-100%
(C000hex)
0%
(0hex)
Par.3-03
0
Par.3-03
Par.3-03
(4000hex)
(0hex)
0%
100%
Par.3-02
e
3
0
b
a
2
7
7
.1
1
Illustration 81: Reference and MAV
AJ363928382091en-000101 / 130R0983
130 | Danfoss A/S © 2021.04
RS485 Installation and Set-up
VLT® Flow Drive FC 111
Design Guide