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10

73.976 | 09.47

EN

7  Operation

7.1  STM 820/860

 WARNING

Danger of explosion from sparking!

When connecting and disconnecting the battery, make sure that the battery 

charger is switched off.
Make sure that the battery to be charged complies with the battery charger's 

specifications.

 NOTE

The power cable and the connection cables to the battery must not be subjected 

to tension, be kinked, or laid over sharp edges under any circumstances.

STM 80: STM 80: turn the potentiometer (Figure 1) all the way to the 

left. 

STM 860: switch off the device with the mains switch (Figure ).
Connect the charging clips to the battery:

Red: + pole, black: – pole

STM 80: set the potentiometer to the capacity of the battery to be 

charged. STM 860: switch on the device with the mains switch.

   

 Exception:  for  material  handling  vehicles  and  bus  depots,  the  mains 

switch  does  not  need  to  be  operated  because  the  battery  detection 

system ensures that the battery is disconnected from the charger.

The charging process starts.
When the LED shines green, the battery is more than 90% charged.
When the LED slowly flashes green, the battery is 100% charged. Trickle 

charging is being realised by the device.

Trickle charging can continue for any length of time.

STM 80: turn the potentiometer (Figure 1) all the way to the left. 

STM 860: switch off the device with the mains switch.
Disconnect the charging clips from the battery.

7.1.1  Operation of battery chargers for the charging of vehicle batteries

It is recommended to disconnect the vehicle battery from the on-board 

power supply, so as to prevent the vehicle's electronics from being dam-

aged. Please note that upon disconnection of the battery, all of the body 

control units' volatile memories lose their saved data. In this event, it may 

be necessary to re-enter data for the following: radio code, vehicle clock, 

timer, on-board computer, seat position, etc.
The battery terminal which is not connected to the car body is to be con-

nected first. The other connection is to be attached to the car body, far 

from the battery and the petrol pipe. The battery charger is then to be 

connected to the mains.
After charging, the battery charger is to be disconnected from the mains. 

The connection to the car body is then to be removed, followed by the 

connection to the battery.

Figure 

Figure 1

Summary of Contents for Stecamat STM 820

Page 1: ...Installation and operating instructions Stecamat STM 8 0 1 V 4 V 36 V 48 V STM 8 1 1 V 4 V 36 V 48 V STM 860 1 V 4 V 36 V 48 V STM 861 1 V 4 V 36 V 48 V 7 3 977 Z0 09 47 BATTERY CHARGING SYSTEMS EN...

Page 2: ...7 5 2 Menu description 7 6 Mounting 9 6 1 Mounting location requirements 9 6 2 Mounting the STM 860 861 9 6 3 Mounting the STM 820 821 9 7 Operation 10 7 1 STM 820 860 10 7 2 STM 821 861 11 8 Care mai...

Page 3: ...65 24 V 35 A 24 V 35 A 36 V 25 A 36 V 25 A 48 V 18 A 48 V 18 A STM 861 12 V 50 A 12 V 50 A LCD display IP 65 24 V 35 A 24 V 35 A 36 V 25 A 36 V 25 A 48 V 18 A 48 V 18 A 1 About this manual These opera...

Page 4: ...s thawed out Lead acid batteries may only be charged if the acid level complies with the bat tery manufacturer s specifications WARNING Ensure that a professional electrician regularly checks the func...

Page 5: ...If acid splashes into the eyes immediately rinse with plenty of water and seek medical advice Ensure that the battery is in a secure and stable position because if the battery were to tip over or fall...

Page 6: ...ed Send the device to the manufacturer for inspection and do not use it any longer 4 Devices with potentiometer and LED STM 860 4 1 Structure The STM 860 battery chargers comprise the following compon...

Page 7: ...ing In start screen start stop charging process 5 2 2 Adjusting settings Example adjusting the displayed battery capacity Make sure that the parameter Battery capacity is marked with the symbol If nec...

Page 8: ...actor 0 3 C the charging current for a 100 Ah battery is 30 A Temperature compensation If temperature compensation is switched on the end of charge voltage is reduced in high temperatures and increase...

Page 9: ...the mains cables or charging cables 6 2 Mounting the STM 860 861 Attach the mounting plate to the wall with four M5 screws not provided Allow the device to slide down from above onto the hooks which p...

Page 10: ...harged When the LED slowly flashes green the battery is 100 charged Trickle charging is being realised by the device Trickle charging can continue for any length of time STM 820 turn the potentiometer...

Page 11: ...ength of time Stop the charging process with the stop button Disconnect the charging clips from the battery Switch off the device with the mains switch STM 861 only 8 Care maintenance and service The...

Page 12: ...nts 12 V 24 V 36 V 48 V Charging capacity 12 V variant max 600 W 24 V variant max 840 W 36 V variant max 840 W 48 V variant max 840 W Characteristic curves STM 820 860 IU STM 821 861 IU IA constant U...

Page 13: ...variant with factory settings 1 Pre charging with end of charge voltage only with totally discharged batteries 2 Charging with constant charging current charging voltage increases 3 Recharging with e...

Page 14: ...t factor This setting is suitable for back up operation e g to supply power to vehicles in exhibition rooms or for uninterruptible power supplies 10 4 4 On off charging 100 16 V 14 4 V 13 8 V 13 5 V 1...

Page 15: ...w a voltage is connected Overvoltage due to additional power supply charger Check the battery Set the capacity correctly Check the battery Disconnect other loads Disconnect the battery The battery cha...

Page 16: ...ension period in writing by the customer the reduction in value caused by the fault shall be replaced or if this is not sufficient taking the interests of the end customer into consideration the contr...

Page 17: ...e product They will help you with any issues you may have Europe Steca Elektronik GmbH Mammostrasse 1 87700 Memmingen Germany Tel 49 0 8331 8558 0 Fax 49 0 8331 8558 132 Email ladesysteme steca com Ba...

Page 18: ...18 723 976 09 47 EN...

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