CH200

Name: CH200
Brand: Campbell Scientific
SKU: 22240
Availability: InStock

Smart 12 V Charging Regulator

CH200

Orderable

Smart 12 V Charging Regulator

Best for general applications with power system monitoring.

Pricing

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Model:: CH200
Item Number:: 22240
Warranty:: 5 years
Lead time:: 14 days
Compliance:: requires charging source and battery

Overview

CH200 12V Charging Regulator (-40 to +60C)

The CH200 is microcontroller-based smart charge controller that is ideal for an external rechargeable 12 Vdc VRLA battery such as Campbell Scientific's BP12 or BP24. The controller manages amperage and voltage for safe, optimized battery charging from a solar-panel or ac power source. It also measures various input, output, and status parameters to allow close monitoring of the battery.

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Key Advantages

Optimized Power Performance
Manages voltage and amperage to protect battery

Technical Description

The CH200 has two input terminals that enable simultaneous connection of two charging sources. It also incorporates a maximum power point tracking algorithm for solar inputs that maximize available solar charging resources. RS-232 and SDI-12 terminals allow the CH200 to convey charging parameters to a data logger.

The CH200 has several safety features intended to protect the charging source, battery, charger, and load devices. Both the SOLAR – G and CHARGE – CHARGE input terminals incorporate hardware current limits and polarity reversal protection.

A fail-safe, self-resettable thermal fuse protects the CHARGE – CHARGE inputs in the event of a catastrophic AC/AC or AC/DC charging source failure. Another self-resettable thermal fuse protects the 12 V output terminals of the charger in the event of an output load fault.

The CH200 also has battery reversal protection, and includes ESD and surge protection on all of its inputs and outputs.

Benefits

Allows charging from various sources: solar panels or AC wall chargers
Two-step constant voltage charging and temperature compensation optimize battery charging and increase the battery’s life
Allows simultaneous connection of two charging sources (e.g., solar panel, ac wall charger)
Ability to monitor both load and battery current
Battery reversal protection
Protects against high-amperage and high-voltage damage to power supply
Real-time measurements of charge input voltage, battery voltage, on-board temperature, battery current, and load current

Specifications

Operational Temperature: -40° to +60°C
(VRLA battery manufacturers state that “heat kills batteries” and recommend operating batteries at ≤ 50°C.)
Dimensions: 7.5 x 3.7 x 10 cm
(3 x 1.5 x 3.9 in.)

CHARGE - CHARGE Terminals (AC or DC Source)

AC: 18 to 24 VRMS
(with 1.2 ARMS maximum)
DC: 16 to 40 Vdc
(with 1.1 Adc maximum)

SOLAR Terminals (Solar Panel or Other DC Source)

-NOTE-: Battery voltages below 8.7 V may result in less than 3.0 A current limit because of fold-back current limit.
Input Voltage Range: 15 to 40 Vdc
Maximum Charging Current: 4.0 Adc typical
(3.2 to 4.9 Adc depending upon individual charger)

Quiescent Current

No Charge Source Present: 300 μA maximum
No Battery Connected: 2 mA maximum

Battery Charging

-NOTE-: Two-step temperature-compensated constant-voltage charging for valve-regulated lead-acid batteries; cycle and float charging voltage parameters are programmable with the default values listed.
CYCLE Charging: Vbatt(T) = 14.70 V - (24 mV) x (T-25°C)
FLOAT Charging: Vbatt(T) = 13.65 V - (18 mV) x (T-25°C)
Accuracy: ±1%
(on charging voltage over -40° to +60°C)

Power Out (+12 Terminals)

Voltage: Unregulated 12 V from battery
4 A Self-Resettable Thermal Fuse Hold Current Limit: > 4 A
(< 20°C)
4 A Self-Resettable Thermal Fuse Hold Current Limit: 4.0 A
(20°C)
4 A Self-Resettable Thermal Fuse Hold Current Limit: 3.1 A
(50°C)
4 A Self-Resettable Thermal Fuse Hold Current Limit: 2.7 A
(60°C)

Measurements

-NOTE-: At -40° to +60°C
Average Battery Voltage: ±(1% of reading + 15 mV)
Average Battery/Load Current Regulator Input Voltage: ±(2% of reading + 2 mA)

Impulse type changes in current may have an average current error of ±(10% of reading + 2 mA).
Solar: ±(1% of reading - 0.25 V) / -(1% of reading + 1 V)

1.0 V negative offset is worst-case due to reversal protection diode on input; typical diode drop is 0.35 V.
Continuous: ±(1% of reading - 0.5 V) / -(1% of reading + 2 V)

2.0 V negative offset is worst-case due to two series diodes in AC full-bridge. Typical diode drops are 0.35 each for 0.7 V total.
Charger Temperature: ± 2°C