jotron RCH-20 Handbook

RCH-20

JOTRON electronics a.s.

RCH-20

Charger for Tron TR20 GMDSS /PLUS

Technical Handbook

Dec.2001

RCH-20

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RCH-20

The information in this book has been carefully checked and is believed to be

accurate. However, no responsibility is assumed for inaccuracies.

CAUTION!

This equipment contains CMOS integrated circuits. Observe handling precautions to

avoid static discharges which may damage these devices.

JOTRON electronics a.s reserves the right to make changes without further notice

to any products or modules described herein to improve reliability, function or design.

JOTRON electronic a.s does not assume any liability arising

out of the application or use of the described product.

RCH-20

CONTENTS

-----------------------------------------------------------------------------------------------------------------

1. SYSTEM DESCRIPTION...........................................................................................................1-1

General information ...........................................................................................................................1-1

2. TECHNICAL SPECIFICATION ..................................................................................................2-1

3. FUNCTIONAL DESCRIPTION ..................................................................................................3-1

Precautions and Warnings ................................................................................................................3-1

Batteries........................................................................................................................................................3-1

Connectors and cables..................................................................................................................................3-1

Storage and safe handling............................................................................................................................. 3-1

4. OPERATING INSTRUCTIONS.................................................................................................. 4-1

Operation...........................................................................................................................................4-1

Notes on charging .............................................................................................................................4-1

5. TECHNICAL DESCRIPTION .....................................................................................................5-1

Introduction........................................................................................................................................ 5-1

Main board (80011) ...........................................................................................................................5-1

6. MAINTENANCE .........................................................................................................................6-1

7. DIAGRAMS ................................................................................................................................7-1

8. PARTS LISTS ............................................................................................................................8-1

RCH-20 1-1

1. SYSTEM DESCRIPTION

General information

RCH-20 is designed to charge the NiMH battery pack for the Tron TR20 GMDSS and Tron TR20
PLUS handheld VHF radios.
It is a dual slot intelligent rapid charger with microprocessor control.
It will fully charge an empty battery pack in less than 4 hours.
It is designed to operate from 12 –24 VDC or 115 / 230VAC with an external adapter.

It is equipped with mounting holes for wall mounting or mounting on a table or shelf.

RCH-20

2-1

2. TECHNICAL SPECIFICATION

General

Dual slot rapid charger with trickle charging.
Wall and table mountable.

Operating voltage: 12 - 24VDC (30VDC max)
115/230VAC with external mains adapter.

Current consumption: < 600mA @12VDC

Charging current: 450 – 500mA (Rapid charge)
Trickle charge approx 10mA

Charge termination method: ∆V, ∆t and timeout.

Charging time: < 4 hours on a fully discharged NiMH battery (X-80059)

Operating temperature range: 0 to +40°C.

Size: 155mm wide x 69mm height x 83mm depth
Weight : Approx. 300g

RCH-20

3-1

3. FUNCTIONAL DESCRIPTION

Precautions and Warnings

Batteries

The rechargeable battery is of NiMH type with a capacity of 7.2V/1500mAh. The following
should be noticed:

• Do not short-circuit, solder, crush, disassemble or incinerate the battery pack. This may

result in fire, explosion and severe burn hazard.

• Avoid charging batteries below 0 °C or above 40 °C.

Connectors and cables

When handling connectors and cables, notice the following warnings:

• Do not force plugs in place, as this may damage the pins in the plugs.

Storage and safe handling

Storage temperature range is from –30°C to +70°C and operating temperature is from 0 °C to
+40 °C.

Cleaning of the equipment can be done with a cloth soaked in a mixture of ordinary dish­detergent and water.