Brake resistor cable terminals are 1:1 compatible between the FCD 300 EB versions and the FCD 302. If shielded cables are used, ensure
that the shield is mounted as stated in the VLT® Decentral Drive FCD 302 Operating Guide.
81 -
82 +
81 -
82 +
Brake
Resistor
FCD 300
FCD 302
FCM 300
e3
0b
h5
99
.1
0
Illustration 4: Brake Resistor Cable Connections
The FCD 300 has dedicated connectors 31A and 31B for connection of the motor thermistors. The FCD 302 with MCA 117 installed uses
AI54 as motor thermistor connector. The FCD 302 can also use 1 of the digital inputs as thermistor source, but if multiple sensors are
connected in series, it might cause false alarms/warnings. The motor thermistor configuration is done via
parameter 1-90 Motor Thermal
Protection
and
parameter 1-93 Thermistor Resource
.
e3
0b
h6
05
.1
0
31A
31B
50
54
FCD300
FCD302
FCM300
1
2
ON
S202
A54 OFF
Illustration 5: Motor Thermistor Cable Connection
The 24 V external supply cable terminals are 1:1 compatible between FCD 300 EB versions and the FCD 302. The FCD 302 may draw a
higher current from the 24 V supply. The FCD 300 has a power consumption of 12 W, where the FCD 302 consumes up to 50 W. The
consumption depends on the configuration of the I/O modules and the sensors connected to the drive.
36
(+)
36
(+)
35
(-)
35
(-)
36
(+)
36
(+)
35
(-)
35
(-)
External
24 V DC
back-up
FCD 300
FCD 302
FCM 300
e3
0b
h6
02
.1
0
Illustration 6: External 24 V Cable Connection
3.2.2 Control Signal Connectors
Digital input cable connection
Digital input terminals are 1:1 compatible between the VLT® Decentral Drive FCD 300 and the VLT® Decentral Drive FCD 302. If shielded
cable is used, ensure that the shield is mounted as stated in the VLT® Decentral Drive FCD 302 Operating Guide.
The FCD 300 reads the digital inputs every 12 ms whereas the FCD 302 reads the digital inputs every 1 ms.
Installation
Operating Guide | VLT® FCD 300 PROFIBUS Converter MCA 117
AQ289550754901en-000101 / 130R0890| 13
Danfoss A/S © 2019.11
Summary of Contents for VLT MCA 117
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