PTL50C-D Dual Voltage PSU/Battery Charger Model C2196A 2Amp 12 & 24Volt Combined Power Supply/ Battery Charger Supply both 12Vdc and 24Vdc continuous power during ac line interruptions without the need for inverters or mains UPS Ideal for RTU’s, dataloggers, remote field instrumentation, alarm systems, etc. where 24Volts is required for instrumentation and 12Volts is required for radios etc. Battery Management Functions include Low Voltage Cut-out, temperature compensation and current limited battery charging True 12/24Volt Split Battery Charge Equalisation Under-voltage cut-out to protect battery from deep discharge. AC detect output for mains monitoring. OVERVIEW The PTL50C-D is a combined Power Supply and Battery Charger for small uninterruptible instrument supply applications where 12Volts and 24Volts are required. Providing both 24Volts and 12Volts in battery-backed systems can be inconvenient and costly. While 12Volts is available in 24Volt battery systems by centre-tapping the two series connected 12Vdc batteries, until now this has been impractical to use because of the different charging requirements of the two batteries. The PTL50C-D dual voltage charger now makes this possible by the provision of true split rail battery charging to provide balanced charging to both batteries even when 12Volts loads are tapped from the battery pack. Applications include RTU’s, dataloggers, remote field instruments and alarm systems where the requirement exists to power both 12Volt radios and 24Volt instruments. BATTERY MANAGEMENT During prolonged power outages, the back-up batteries will eventually discharge. If the load remains connected, the batteries can enter their “deep” discharge phase, which can cause irreparable damage to the batteries, and reduce their capacity and life expectancy. The PTL50C-D incorporates a low voltage cut-out that disconnects the loads when either battery voltage falls below its low voltage threshold. Temperature compensation for optimum battery float voltage in changing ambient temperatures. Universal 85-264Vac mains supply DIN Rail mounting with small panel footprint The maximum float voltage necessary to ensure full charge, but not overcharge, is temperature dependent for lead-acid batteries. If the installation is in an environment with widely fluctuating temperature, then fixed voltage chargers will either under-charge or over-charge the batteries. The PTL50C-D is provided with temperature compensation so that the float voltage to the batteries is held at its optimum value at all times. DUAL MODE CHARGING Batteries can be kept on continuous charge as long as the charging current and float voltage are kept below their specified maximum values. The maximum charging current for a battery is based upon the Ampere-hour capacity of the battery. Many conventional switch mode power supplies do not control their maximum delivered current and can cause batteries to be charged from flat with current levels that exceed the manufacturer’s recommendation. The PTL50C-D provides dual-mode charging, with a well defined current limit in boost mode, so that even when the batteries are discharged, the charging current will be controlled. SYSTEM MONITORING The PTL50C-D also provides an AC OK output. This output can be used to detect power failures without the need for an additional mains detection relay. Copyright Omniflex ♦ Subject to change without notice

PTL50CD Dual Voltage PSU/Battery Charger Model C2196A 2Amp 12/24Volt Power Supply/ Battery Charger Typical System Connection Diagram SW 1 Al rm equS enc e a Temperature Compensation Battery Charge Control 12V LOAD 12 Volt Battery B Mechanical Details Copyright Omniflex ♦ Subject to change without notice

PTL50CD Dual Voltage PSU/Battery Charger Model C2196A 2Amp 12/24Volt Power Supply/ Battery Charger AC input voltage range Input current at full load Switch-on inrush current Surge withstand Fast Transients Voltage change from 20°C Maximum Voltage Range Max continuous load current (Load + Battery) Maximum Continuous Total Power Load Ouput Nominal Output Voltage (subject to Maximum Total Power) Immunity – Fast Transients IEC 61000-4-4:1995 2 kV – DC power port 1 kV – input/output lines Ordering Information Maximum Peak Load (drawn from the battery) Load Regulation ORDER CODE Powerterm Model PTL50C-D...

PTL50CD Dual Voltage PSU/Battery Charger Model C2196A 2Amp 12/24Volt Power Supply/ Battery Charger APPLICATION NOTES BATTERY SELECTION The PTL50C-D is designed to operate with sealed lead acid (SLA) type batteries also known as Valve Regulated Lead Acid (VRLA) batteries. This type of battery is sealed except for a valve that opens when the internal gas pressure exceeds safe limits. (That is why it is important not to overcharge SLA batteries). Generally, these batteries can be used in confined areas and can be mounted in any orientation. (see the specific manufacturer’s data for details.) When...