Figure 36. CAN grounding
If PT100/1000 temperature inputs are used, use signal ground as the ground connection for the
sensor.
Motor overload protection
The electric device has three PT100/1000 external temperature sensor inputs that can be used to
protect the motor from overheating. These inputs can be con gured to derate the motor current
linearly between two temperatures. For example derate could start when motor temperature is
130C and linearly derate the motor current as motor heats and the maximum derate could be at
150. Additionally there are three con gurable temperature levels that can cause different actions.
First level is note, second is warning and third is fault. Note can only be seen in fault log of the
device. Warning can be seen as CAN-message as well as in fault log. Fault will trip the device
stopping all operation and will also show as CAN message and in fault log.
In addition to the temperature surveillance that can be used the device has over current and short
circuit protection that stops the device if short circuit or over current is detected.
Signals for monitoring, diagnostics and set-up
The electric device can be connected to the USB-port of the PC with the maintenance
connector (USB to RS485). Maintenance connector enables monitoring, diagnostics and setting up
of the electric device. By using the PowerUSER application, it enables these functions via remote
access, for example in the case of problem solving.
Reliable connection between the PC and the electric device can be ensured by using the Power
Series Service Cable (PSSC). The PSSC is isolated RS485 and shielded cable, designed for
demanding environments. The cable is available in 3 meter (PSSC-3M) and 10 meter version (PSSC-
10M). Same cable can be used with all Danfoss mobile electri cation products that have a service
connector.
The service cable is ordered separately, see Chapter
for ordering details.
PowerUSER application can be downloaded for free from
EC-C1200-450
5. Installation
| BC265735231757en-000109
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Danfoss | Produced By: Danfoss Power Solutions | January 2019 | 55
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