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Help CenterDEIF DLQ144-PC-NB Multi-Function Controller – Reliable 144 mm Panel Controller for Gensets and Switchgear
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Warranty period: 365 days
Delivery: 1 week for in-stock, no more than one month at the latest
Payment: 50% advance payment, full payment before delivery
Express delivery options: FedEx, UPS, DHL
144×144 mm panel-mount form factor – Makes replacements straightforward; cut-out typically 138×138 mm with gasket.
Multi-function measurement – Voltage, current, frequency, power factors and energy values for quick diagnostics in many cases.
Programmable I/O – Digital inputs and relay outputs for start/stop, alarms, and breaker interlocks; helps reduce external relays.
Protective functions – Over/under voltage and frequency, phase sequence/loss, and configurable trip levels to protect assets.
RS-485 (Modbus RTU) – Easy SCADA/PLC integration for remote supervision and data logging.
User-friendly HMI – Front keys with clear status LEDs; you can navigate parameters without a laptop on most jobs.
24 VDC power range – Typically accepts wide-range DC supply common in control panels, simplifying wiring.
Event/alarm logs – Speeds up troubleshooting; technicians usually find issues faster during commissioning.
| Brand / Model | DEIF DLQ144-PC-NB |
| HS Code | 9032.89 (Other automatic regulating or controlling instruments) |
| Power Requirements | Typically 8–36 VDC (24 VDC nominal) |
| Dimensions & Weight | Front 144×144 mm; panel cut-out approx. 138×138 mm; depth ~70–110 mm; weight ~1.0 kg (typ.) |
| Operating Temperature | -20 to +70 °C (typical controller range) |
| Signal Input/Output Types | Voltage/current measurement inputs; digital inputs; relay outputs; selectable analog input (model dependent) |
| Communication Interfaces | RS-485 (Modbus RTU); optional service port depending on version |
| Installation Method | Panel mounting with brackets; front gasket for IP protection on the fascia |
Notes: Values reflect common configurations for 144 mm DEIF controllers. The exact I/O and ports may vary by DLQ144-PC-NB build and regional variant.
Generator sets – Local measurement, protection, and start/stop logic for standby or prime power units.
Low-voltage switchboards – Feeder or incomer supervision with trip/alarm handling.
Industrial plants – Pumps, compressors, or CHP skids where a compact controller simplifies wiring.
Commercial buildings – Retrofit of legacy 144 mm meters/controllers to add Modbus visibility.
Utilities and microgrids – Basic tie-breaker or feeder monitoring where a full PMS seems unnecessary.
Proven reliability – DEIF gear is known for stable operation; fewer nuisance trips saves maintenance visits.
Compatibility – Standard RS-485/Modbus eases integration with PLC/SCADA platforms already on site.
Lower total cost – Integrated measurement + logic often replaces separate relays and meters.
Fast commissioning – Clear menus and presets reduce setup time; technicians typically finish in one visit.
Lifecycle support – Firmware and parameter backups streamline future upgrades or replacements.
One thing I appreciate is how quickly teams can retrofit these into older panels. A facility contractor in Eastern Europe mentioned their swap-out took under two hours including Modbus mapping because the 144 mm format lined up with the existing cut-out.
Installation & MaintenancePanel requirements – Standard 144×144 mm aperture; ensure flat mounting surface and use the supplied gasket for the front seal.
Ventilation – Provide natural ventilation in the cabinet; avoid direct heat sources and high vibration points.
Wiring – Use ferruled conductors; segregate signal/communication wiring from power cables; follow terminal torque recommendations.
Grounding – Bond controller reference to panel ground; maintain shield continuity for RS-485 and CT/VT leads.
Safety – De-energize circuits before work; verify CT polarities and never open-circuit live CT secondaries.
Routine maintenance – Inspect terminals quarterly, clean fascia with a dry cloth, back up parameters, and apply firmware updates when validated.
Calibration – Where metering accuracy is critical, verify readings annually against a portable reference meter.
Compliance: CE marked; RoHS compliant; designed to meet relevant IEC/EN standards for control equipment.
UL/CSA: Availability may depend on regional variant; please specify if a listed version is required.
Warranty: 365 days warranty coverage from delivery.
Split-core or solid-core CTs (5 A secondary, Class 0.5/1.0) – For accurate current measurement on feeders.
RS-485 isolated converter and surge protection – Improves communications reliability over longer cable runs.
Control relays and interposing relays – For interfacing with breaker coils and external alarms.
Panel sealing kit – Maintains front IP rating in dusty or humid environments.
If you’re standardizing a fleet, share any special I/O needs (e.g., additional analog inputs or specific Modbus registers). We’ll match the DLQ144-PC-NB variant and firmware to your panel drawings to keep commissioning smooth.
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