FC 300 Operating Instructions
General Specifications
Control card, USB serial communication:
USB standard ........................................................................................................... 2.0 (low speed)
USB plug ..................................................................................................
USB type B “device” plug
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Relay outputs
Programmable relay outputs ............................................................................. FC 301: 1 / FC 302: 2
Terminal number, power card ...................................... 1-3 (break), 1-2 (make), 4-6 (break), 4-5 (make)
Max. terminal load (AC) on 1-3 (break), 1-2 (make), 4-6 (break) power card ..................... 240 V AC, 2 A
Max. terminal load (AC) on 4-5 (make) power card ........................................................
400 V AC, 2 A
Min. terminal load on 1-3 (break),
1-2 (make), 4-6 (break), 4-5 (make) power card ................................. 24 V DC 10 mA, 24 V AC 100 mA
Environment according to EN 60664-1 .................................. overvoltage category III/pollution degree 2
The relay contacts are galvanically isolated from the rest of the circuit by reinforced isolation (SELV).
Cable lengths and cross sections:
Max. motor cable length, screened/armoured ......................................... FC 301: 50 m / FC 302: 150 m
Max. motor cable length, unscreened/unarmoured .................................. FC 301: 75 m / FC 302: 300 m
Max. cross section to motor, mains, load sharing and brake (see section Electrical Data in the FC 300 Design
Guide MG.33.BX.YY for more information), (0.25 kW - 7.5 kW) ..................................... 4 mm
2
/ 10 AWG
Maximum cross section to control wires, rigid wire ..............................
1.5 mm
2
/16 AWG (2 x 0.75 mm
2
)
Maximum cross section to control cables, flexible cable ................................................. 1 mm
2
/18 AWG
Maximum cross section to control cables, cable with enclosed core ............................... 0.5 mm
2
/20 AWG
Minimum cross section to control wires ............................................................................... 0.25 mm
2
Cable lengths and RFI performance
FC 30x
Filter
Supply voltage
RFI compliance at max. motor cable lengths
FC 301
FC 302
With A2 filter
200 - 240 V / 380 - 500 V /
400 - 500 V
<5 m. EN 55011 Group A2
FC 301
With A1/B
200 - 240 V / 400 - 500 V
<40 m. EN 55011 Group A1
<10 m. EN 55011 Group B
FC 302
With A1/B
200 - 240 V / 380 - 500 V
<150 m. EN 55011 Group A1
<40 m. EN 55011 Group B
FC 302
No RFI filter
550 - 600 V
Not compliant with EN 55011
In certain instances, shorten the motor cable to comply with EN 55011 A1 and EN 55011 B.
Copper (60/75°C) conductors recommended.
Aluminium conductors
Aluminium conductors are not recommended. Terminals can accept aluminium conductors but the conductor
surface has to be clean and the oxidation must be removed and sealed by neutral acid free Vaseline grease
before the conductor is connected.
Furthermore, the terminal screw must be retightened after two days due to the softness of the aluminium. It
is crucial to keep the connection a gas tight joint, otherwise the aluminium surface will oxidize again.
Control card performance:
Scan interval ...................................................................................... FC 301: 10 mS / FC 302: 1 ms
50
MG.33.A2.02 - VLT is a registered Danfoss trademark