Danfoss FC 300 Design Manual page 76

4. FC 300 Selection
Cable lengths and cross-sections:
Max. motor cable length, shielded
Max. motor cable length, unshielded
Max. cross-section to motor, line power, load sharing and brake,
(0.33-10 hp [0.25 kW-7.5 kW])
Max. cross section to motor, line power, load sharing and brake,
(15-20 hp [11-15 kW])
4
Max. cross-section to motor, line power, load sharing and brake,
(25-30 hp [18.5-22 kW])
Maximum cross-section to control terminals, flexible/rigid wire
without cable end sleeves
Maximum cross-section to control terminals, flexible wire with ca-
ble end sleeves
Maximum cross-section to control terminals, flexible wire with
cable end sleeves with collar
Minimum cross-section to control terminals
Protection and Features:
•
•
•
•
•
•
Digital inputs:
Programmable digital inputs
Terminal number
Logic
Voltage level
Voltage level, logic'0' PNP
Voltage level, logic'1' PNP
Voltage level, logic '0' NPN
Voltage level, logic '1' NPN
Maximum voltage on input
Pulse frequency range
76
FC 301: 164 ft. [50 m] / FC 301 (A1-encl.): 82 ft [25 m] / FC
Electronic thermal motor protection against overload.
Temperature monitoring of the heatsink ensures that the adjustable frequency drive trips
if the temperature reaches a predefined level. An overload temperature cannot be reset
until the temperature of the heatsink is below the values stated in the tables on the
following pages (Guideline - these temperatures may vary for different power sizes, en-
closures, etc.).
The adjustable frequency drive is protected against short-circuits on motor terminals U,
V, W.
If a line phase is missing, the adjustable frequency drive trips or issues a warning (de-
pending on the load).
Monitoring of the intermediate circuit voltage ensures that the adjustable frequency drive
trips if the intermediate circuit voltage is too low or too high.
The adjustable frequency drive constantly checks for critical levels of internal tempera-
ture, load current, high voltage on the intermediate circuit and low motor speeds. As a
response to a critical level, the adjustable frequency drive can adjust the switching fre-
quency and/or change the switching pattern in order to ensure the performance of the
drive.
2)
2)
MG.33.B9.22 - VLT
FC 301: 246 ft. [75 m] / FC 301 (A1-encl.): 82 ft [25 m]/
0.0062 in.
0.025 in.
0.054 in.
0.0023 in.
0.0016 in.
0.00078 in.
0.0039 in.
FC 301: 4 (5) / FC 302: 4 (6)
® is a registered Danfoss trademark.
FC 300 Design Guide
302: 492 ft [150 m]
FC 302: 984 ft [300 m]
2 [4 mm 2 ] / 10 AWG
2 2
[16 mm ] / 6 AWG
2 [35 mm 2 ] / 2 AWG
2 2
[1.5 mm ]/16 AWG
2 [1 mm 2 ]/18 AWG
2 [0.5 mm 2 ]/20 AWG
2 [0.25 mm 2 ]/24 AWG
1) 4)
18, 19, 27 , 29 , 32, 33,
PNP or NPN
0-24 V DC
< 5 V DC
> 10 V DC
> 19 V DC
< 14 V DC
28 V DC
0-110 kHz