Sigma DPC-123  speed control board

DPC-123 Sigma Elevator speed control board
LG elevator speed control board

Ordering the dpc-123 sigma speed

To order the dpc-123 sigma speed, send us a photograph of the existing unit and its nameplate at [email protected]. Please quote the complete code including any revision suffix so that our team can confirm the correct variant, current stock and lead time before you commit.

About the dpc-123 sigma speed

Elevator and escalator installations are built around a relatively small number of serviceable assemblies, but they fail at very different rates. The dpc-123 sigma speed sits in the control board / PCB group, and it is replaced on a different service interval from the assemblies around it. In practice the failures we see on dpc-123 sigma speed come down to electrolytic capacitor ageing, cracked solder joints around the power stage, corroded edge connectors, and blown output transistors after a supply fault.

Every dpc-123 sigma speed we supply is inspected before dispatch. Each unit is checked for physical damage, correct marking and the specific wear or degradation patterns that matter for this class of component, then packed to survive international transit. Where a superseded revision is the only one available, we say so plainly and explain the substitution, so the installing engineer can make an informed decision rather than discovering the difference on site.

Buying guidance and compatibility notes

Before ordering the dpc-123 sigma speed, confirm three things. First, the controller catalogue number and the board revision letter, plus the fault code stored in the controller memory. Second, the same board is frequently fitted across several controller families, so the equipment model alone is not enough to identify the right revision. Third, whether the installation is a traction lift or an escalator, since duty cycle and loading differ between the two.

On fitting, one point is worth repeating: discharge the DC bus before removing a power board, and photograph the connector layout before you unplug anything. Almost every repeat failure we see on dpc-123 sigma speed traces back to a related component that was left in place, or to an adjustment that was assumed rather than measured.

If you are unsure which variant of the dpc-123 sigma speed you need, send a photograph of the nameplate and the existing component alongside a description of the fault. That is usually enough for our team to identify the correct replacement without a site visit, and it avoids the cost and delay of returning an incompatible part. We are also happy to advise on the other serviceable items in the same control board / PCB group, so a planned shutdown can cover several wear items at once.

Related parts and further reading

Because dpc-123 sigma speed is only one item in the control board / PCB group, these related pages may help you plan the work:

• Elevator spare parts
• Door Operator Controller
• Elevator Display
• Elevator Encoder
• Elevator Service Tool

Reference sources

The compatibility information on this page was cross-checked against the following authoritative references. Always confirm the exact reference against your own equipment nameplate.

• ISO 8100-1 — lift safety standard
• IEC — international electrotechnical standards
• Otis genuine parts reference