Schaefer Series C/B 4800 User Manual

Page 8

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Options & Accessories

TC 01

Control function

analogue or micro-processor-controlled supervision:

■

input voltage

■

output voltage

■

battery circuit

■

ground insulation failure

■

over temperature

UC 03

Inhanced controller function

The „UC 03“ unit controls and supervises the optimum charging

of a battery, up to an entire UPS system. A battery charging in a

basic way, with a switch mode AC / DC or DC / DC Charger, is

shown in the following ﬁgure.

The charger output voltage is regulated inside the charger accor-

ding to the input “Vref” signal. The gain factor between Vref and

Vo/p is deﬁned in the Speciﬁcation of the Charger. The charger

current limitation is also a function of the charger. The reference

values, limitations and monitoring levels for charging a battery

(ies) are conﬁgurable in the UC 03. The charging of the battery

occurs according to the current / voltage characteristics, i.e. the

battery is loaded in current limitation, until the appropriate vol-

tage is reached. The following working conditions are processed

by the UC 03:

Float Charge conforms to the recommended permanent voltage

to hold the battery within a completely charged state.

Equalize or Automatic Boost Charge: To charge the battery after a

partial or deep discharge as quickly as possible, an increased vol-

tage is provided. This mode is activated automatically via different

functions, or manually via the front panel button.

Manual Boost Charge: independently adjustable voltage, to rege-

nerate an aged battery. In all three working conditions the maxi-

mum battery charge current is limited.

Control & Monitoring

for Switch Mode & Thyristor-Controlled Systems

Mains

Power

UC 03-xx

Charger

V ref

0...10V

Battery current

Battery voltage

Battery

V o/p