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ZTE / System Controllers & Monitoring Units (SMU/CSU)

CSU500B Equipment information & support

The ZTE CSU500B is the master supervisory controller module driving ZTE ZXDU embedded and cabinet DC power systems, featuring an intuitive graphic LCD display, automated battery float/boost management, and multi-protocol OSS telemetry.

Equipment information

Brand
ZTE
Equipment model
CSU500B
Equipment type
System Controllers & Monitoring Units (SMU/CSU)
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE CSU500B Central Supervisory Unit Module (High-Contrast LCD Display Telecom Power Brain) - Official Front View

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Compatible Inverter Subracks
ZTE ZXDU48 / ZXDU68 Series
Human-Machine Interface
Graphic Backlit LCD + Navigation Keys
Power Supply Specification
40V to -60V DC Subrack Bus Power
Historical Alarm Buffer
2000 Non-Volatile Event Records
Communication Interfaces
RS232 / RS485 / 8 Dry Alarm Relays
Battery Protection Algorithms
Dual LVD Shedding + Temp Compensation

Alarms & troubleshooting

AC_IN_FAIL / MAINS_LOST
Input Amber / Alarm Red solid
Utility grid failure, AC breaker tripped, or line voltage out of range
1. Measure incoming AC voltage with a multimeter; 2. Check input circuit breaker and upstream distribution; 3. System automatically soft-starts upon power restoration.
DC_OV_SHUTDOWN / LOCKOUT
Alarm Red solid, module output locked out
DC bus overvoltage or internal feedback sensor fault
1. Measure actual DC bus terminal voltage; 2. Cycle AC supply breaker to discharge capacitors and reboot; 3. Replace power module if fault recurs persistently.
FAN_FAIL / OVER_TEMP
Temp Yellow solid, fan halted or derated
Air intake dust blockage or fan bearing obstruction
1. Clean dust accumulation from intake grilles and filters; 2. Verify ambient room air conditioning is operational; 3. Replace cooling fan if rotation remains stalled.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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