User Manual for Delta PMR 150W Series Panel Mount Power Supply

Quick guide from the manual

The Delta PMR 150W series is a panel mount power supply designed for industrial and household applications. It features a universal AC input, compact 1U low-profile design, and wide operating temperature range (-40°C to +70°C). Key operational requirements include proper mounting on a grounded metal surface, maintaining a 50mm clearance for convection cooling, and using appropriate wire gauges (AWG 18-12).

Product Description

The PMR 150W series provides nominal output voltages of 12V, 24V, 36V, or 48V. It includes built-in active PFC, overvoltage protection, overload protection, and over-temperature protection. The unit is housed in an aluminum chassis with an SGCC cover and includes a green DC OK LED indicator.

Installation and Mounting

Mounting Requirements:

• Mount the power supply onto a grounded metal surface.
• Use M3 screws for base mounting.
• Ensure the screw depth does not exceed 3mm to maintain a safe distance from internal components.
• Recommended mounting tightening torque is 4-5 Kgf.cm.
• Maintain a safety distance of at least 50mm from all ventilated surfaces to ensure sufficient convection cooling.
• Do not place the device on low thermal conductive surfaces like plastics.

Wiring:

• Use flexible cable (stranded or solid) of AWG 18-12.
• Calculate wire specification based on the actual output current.
• The torque at the connector must not exceed 8 Kgf.cm.
• Insulation stripping length should not exceed 7mm.

Safety Instructions

• Do not touch the device while in operation or immediately after power is turned off due to the risk of burning.
• Do not touch terminals while power is being supplied to avoid electric shock.
• Prevent foreign metal particles or conductors from entering the device openings.
• If mounting orientation differs from recommended guidelines, consult the manufacturer.

Technical Specifications

• Input Voltage: 90-264 Vac (127-375 Vdc).
• Operating Temperature: -40°C to +70°C.
• Cooling System: Convection.
• MTBF: > 700,000 hours (Telcordia SR-332).
• Protection: Overvoltage (Latch Mode), Overload/Overcurrent (Hiccup Mode), Over Temperature (Latch Mode), Short Circuit (Hiccup Mode).

Protections and Functions

Overload & Overcurrent (OLP/OCP): Activated when output current exceeds 110% of max load. The unit enters "Hiccup mode" (Auto-Recovery) until the fault is removed.

Overvoltage Protection (OVP): Activated if internal feedback fails. The unit enters "Latch mode" and requires removal and re-application of AC input power to restart.

Over Temperature Protection (OTP): Activated if operating temperature exceeds limits. The unit enters "Latch mode" until the temperature drops to normal operating levels.