Bosch PLN-24CH12 - User Manual

Questions and Answers

H
Heather SmithAug 1, 2025
What to do if Bosch Battery Charger has no back-up power when mains is connected?
- J
  Jordan WhiteheadAug 1, 2025
  If your Bosch Battery Charger shows no back-up power when the mains is connected (Battery status and Output status LED is yellow), the fuse F8 might be broken due to a reversed battery connection while the battery relay was already switched on. Disconnect both the battery and the mains power from the battery charger. Then, check and replace fuse F8, along with the Main and Auxiliary fuses.
I
idixonAug 7, 2025
What to do if my Bosch PLN-24CH12 does not start-up when connected to the mains?
- G
  gonzalezveronicaAug 7, 2025
  If your Bosch Battery Charger doesn't start when connected to the mains and the LEDs are off, it could be due to a broken mains fuse. Check and replace fuse F1. Alternatively, the load on the battery charger outputs might be too high (over 12 A). In that case, disconnect the load on the main and auxiliary outputs until it's below 12 A.
L
Lisa BrownAug 13, 2025
What to do if Bosch PLN-24CH12 has no backup power on one or more outputs?
- J
  Julie WoodardAug 13, 2025
  If your Bosch Battery Charger has no backup power on one or more outputs (main or auxiliary status LED is yellow), one or more main or auxiliary output fuses might be broken. Check the voltage of the main and auxiliary outputs; the measured voltage should match the battery terminal voltage. Replace the blown fuse.
D
davidnelsonAug 19, 2025
What to do if my Bosch Battery Charger doesn't start charging?
- K
  Kathleen WilliamsAug 19, 2025
  If your Bosch Battery Charger doesn't start charging when switched on, and the battery relay isn't activated (Battery status LED is yellow), the battery voltage may be outside the acceptable range. For PLN-24CH12, the voltage should be between 14 V and 30 V, and for PRS-48CH12, it should be between 40 V and 60 V. Check the voltage on the battery terminal and fix the problem if the battery voltage is not within the specified values.
S
Steven GilbertAug 25, 2025
What to do if battery is connected in reverse in Bosch PLN-24CH12?
- E
  eric51Aug 25, 2025
  Check the battery polarity on the battery terminals. If the battery is connected in reverse, correct the connection.

Summary

Safety

Safety precautions

Safety measures for connecting the charger to the 230 Vac network and performing interventions.

Installation

Battery jumper setting

Instructions for setting the battery jumper to configure charge thresholds and current limits.

Rack mounting

Requirements for installing the battery charger in a 19-inch rack, including environmental standards.

EN54-4 labeling

Guidance on affixing the EN54-4 certification labels for the specific charger models.

Connection

Connecting the battery

Instructions and cautions for connecting the battery to the charger, including series connection.

Connection specifications

Connect the back-up power

How to connect the main screw terminals to the Voice Alarm System components.

Connect the auxiliary power

Details on using the pluggable terminals for auxiliary power outputs.

Connect the output contacts

Explains the fail-safe output contacts for remote monitoring.

Mains power cable

Using the supplied connector to assemble a mains power cable.

Ground connection

Ensuring the safety ground connection is properly made via the mains power cable.

Configuration

Battery charging

Details charging modes, current limits, and authorized battery types for the charger.

Operation

Working principles

Explains the charger's operational modes and key functions.

Battery test

Battery undervoltage protection

Charging

Battery temperature compensation

Commissioning the system

Step-by-step procedure for initial system setup and verification.

Troubleshooting

Maintenance

Technical Data

Electrical

Fuses

Mechanical

Environmental conditions

Approvals and compliance with standards

Bosch PLN-24CH12 Specifications

General

Input current	2 A
Input voltage	200-260 V
Input frequency	50/60 Hz
Power consumption (typical)	380 W
Quantity per pack	1 pc(s)
Storage temperature (T-T)	-25 - 85 °C
Operating temperature (T-T)	-5 - 45 °C
Operating relative humidity (H-H)	0 - 95 %
Product type	Battery charger
Product color	Charcoal, Silver
Brand compatibility	Bosch
Number of batteries supported	-