Hyundai YL005 Maintenance Manual page 70

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4.3.4.1 Connection and display
The connector layout, usages, and connecting devices used by the RDM are as follows:
Connector
CNPM3 Connection of 48 V DC power line (for motor)
CNRDM Connection of state information signals
The details of the state display of the RDM are as follows:
LED
Detection of overheating of the regenerative
LED7 discharge resistor or overcurrent of the discharge
current
Detection of disconnection of the regenerative
LED8
discharge resistor
LED9 Detection of regenerative discharge operation
LED10 Detection of regenerative discharge overtime
4.3.4.2 Information on major components
The regenerative discharge board uses fuses for protecting components against overcurrent, and a regenerative
discharge resistor. The fuses are mounted at upstream of the board and at the upstream of the regenerative
discharge resistor, while the resistor is mounted at the downstream of the board. For the inside composition and
component specifications, see the following figure and table.
Fuse and fuse holder (F1)
for input overcurrent
protection
70
_Maintenance | Controller check and maintenance
Usage
Usage
Thermal fuse connection terminals (P1, P2)
Figure 28 Inside view of the RDM (top)
External connecting device
Power pre-charge module (PPM) CNPM3
Safety control module (SCM) CNPMD
Display details (lamp state)
Overheating of the regenerative discharge
resistor (95℃)
or Overcurrent of the discharge current
(15A)
The regenerative discharge resistor is
disconnected (displayed even during the
regenerative discharge operation)
Under regenerative discharge operation
Occurrence of regenerative discharge
operation for 10 ms or longer
Terminal block (P3) for
regenerative discharge
resistor connection
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