What the 13200 alarm means

Drive DC bus voltage is outside the valid window — overvoltage from regeneration or undervoltage from the supply. This is a routine repair in our workshop for ROKAE xCore (XB / CR / NB series) systems, and we normally pin it down during the first site check.

Most common causes

  • Incoming supply out of range
  • Braking resistor open or undersized
  • Loose main-circuit terminals
  • Aggressive deceleration of a heavy axis
Field note: Begin with the first item in the list; it has a far higher on-machine occurrence rate than the others.

Step-by-step field fix

  1. Measure the supply voltage under load
  2. Check the braking resistor and its wiring
  3. Tighten main terminals
  4. Soften deceleration ramps
  5. Replace the drive if supply and resistor are healthy
Safety first: For ROKAE 13200, this alarm family involves the DC bus, which sits at several hundred volts and stays charged for minutes after power-off - touching terminals is a shock hazard. On site you may not carry out the first step yourself: Measure the supply voltage under load. Beyond that it is the DC bus and power stage work - leave it to a professional. On ROKAE 13200: checking incoming voltage at the disconnect and looking at breakers and fuses is fine to do yourself; opening the cabinet to touch bus terminals or pulling power modules needs a qualified electrician.

How we diagnose drive alarms on site

ROKAE 13200 belongs to the drive & power stage family. On ROKAE 13200 the failing stage is in-house cabinet drive modules; joint-integrated on light and collaborative arms on the ROKAE xCore controller - the fault sits on the energy chain: mains input, rectification, DC bus, braking resistor, inverter power devices and the drive board. We start reading ROKAE 13200 at the pendant alarm list; codes segment as 1xxxx / 5xxxx / 6xxxx.

The chain involved in ROKAE 13200 runs: three-phase mains -> rectifier -> DC bus (bus capacitors) -> brake chopper / braking resistor -> inverter (IGBT) -> motor.

Bottom line up front: Incoming supply out of range is the first suspect for ROKAE 13200, but read it along the energy chain: Any link on this chain dropping voltage shows up at the end as a drive alarm, so order matters. We measure the mains first: more than 3% phase imbalance is enough to sag the bus under load, and plenty of bus over/under-voltage alarms are actually a grid problem wearing a robot costume. Mains fine, then the bus capacitors - bulged cases, weeping electrolyte or a lifted vent mean replacement; capacitance down 20% or more cannot hold the bus during braking. Last, the braking resistor: healthy values sit in the tens of ohms depending on rating, and an open or drifted resistor trips regenerative overvoltage directly.

Field notes on this page cover ROKAE 13200 (Bus Voltage Abnormal); written by the Henghuan repair team, updated 2026-10-01.

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Related Drive & Power Stage alarms

10014 — Servo Drive Fault / Not Ready
Same family: this code belongs to the Drive & power stage alarms family - the page collects all Drive & power stage-family codes we have handled, with the common inspection order and spares.
Other brands: we also keep field-fix libraries for Dobot · FANUC · KUKA and more — see the complete alarm code hub.

Frequently asked questions

QWhat does the ROKAE 13200 alarm mean?

Drive DC bus voltage is outside the valid window — overvoltage from regeneration or undervoltage from the supply. This is a routine repair in our workshop for ROKAE xCore (XB / CR / NB series) systems, and we normally pin it down during the first site check. ROKAE 13200 sits in the drive & power stage family; on our work orders the highest-frequency trigger for this code is "Incoming supply out of range".

QCan I clear a ROKAE 13200 alarm myself?

Whether ROKAE 13200 clears on its own depends on the outcome of "Measure the supply voltage under load". Finish the flow with "Replace the drive if supply and resistor are healthy" to confirm ROKAE 13200 - do not skip it. If that step is clean, the second most frequent cause on ROKAE 13200 is "Braking resistor open or undersized". After clearing ROKAE 13200, watch it for one shift. A second trip means stop and let an engineer arrive with the right test gear for the DC bus and power stage.

QFor drive/power alarms like ROKAE 13200, what spares do you bring on site?

The commonest causes we see on ROKAE 13200 are "Incoming supply out of range, Braking resistor open or undersized, Loose main-circuit terminals", so we stock the van against those. For ROKAE 13200 specifically, we stock the van along the energy chain: braking resistors, bus capacitors, input fuses, drive-board supply parts and the common power modules for the brand. For ROKAE 13200, drive alarms usually stop the whole line, so they sit at the front of our dispatch queue. Before we roll, tell us what ROKAE 13200 shows on the pendant alarm list; codes segment as 1xxxx / 5xxxx / 6xxxx and what the machine was doing - phone or video triage is free.

This page on ROKAE 13200 is based on the field experience of the Henghuan Robotics repair team. Alarm explanations are our own summary for troubleshooting reference and may differ across controller and software versions — if unsure, verify against ROKAE documentation or reach out to us. Henghuan is an independent service provider with no affiliation or endorsement by ROKAE.