SPECIFICATIONS MAC 24/12-20A
Part number
81200100
Nominal input voltage:
24 VDC
Input voltage range:
20-32 VDC
Input range (3 step charger mode): 24-32 VDC
Input range, no defects:
0-35 VDC
Lower input set point:
20 VDC (adjustable by software)
Fuse
25A (blade fuse, exchangeable. internally located)
Output
Output voltage range:
10-15 / 20-28.5 V DC (adjustable by software via QRS232 communication port)
Nominal voltage
stabilized voltage
13.6 VDC / 27.2 V DC (adjustable by software, selectable by DIP-switch #3)
Output voltage
3 step 12V charger
Absorption / Float
14.25 / 13.25 V DC
Output voltage
dimmer
:
4.0-13.0 / 8.0-26.0 V DC
Stabilized:
2% at extremes of temperature, load and input
Ripple:
1% peak peak
Power max.:
300 W
Power rated:
270 W
Current max.:
20A +/- 5% (derating above 40°C, 5% per °C)
Fuse:
25A (blade fuse, exchangeable. internally located)
General
Operating temperature:
0°C to 60°C; (derating above +40°C, 5% per °C)/
32 °F to 140 °F (derating above 104 °F, 3% per °F)
Storage temperature:
-25°C to 85°C/ -13 °F to 185 °F
Operating humidity:
95% max., non-condensing
Vibration and shock:
IEC 68-2-6
Galvanic isolation:
No, common negative
Current limited:
Yes, I-max
Battery charging function:
Yes,
3-Step charging
(default output voltage: 13.6 V, float: 13.25-14.25V)
Efficiency:
90% (@ 24V in, full load) typical; 92% peak
No-load consumption:
Typical <30 mA
MTBF:
> 200,000 hours
Protections
Over current:
Limited output power by reducing output voltage
Over heat:
Limited output power by reducing output current, switch off at 90°C internally
3step charge under voltage:
Automatic switch off if input voltage is < 24.0V, switch on again at 26.0V
Over voltage:
Over voltage protected by latch thyristor
Options
3 Stage
Battery Charger:
Activated by DIP-switch #2
Remote switch function:
By external momentary switch (activated by DIP-switch #4)
Dimmer function:
By external momentary switch (activated by DIP-switch #1)
Parallel connectability:
In mode Stabilized Voltage, up to 6 devices in parallel
Communication:
Quasi RS232, modular RJ12 connection. Optional: MasterBus serial interface
(art. no. 77030400) to control & configure from MasterBus network.
Mechanical
Input/output terminals:
Screw terminal blocks, Ø 5mm
Dimensions (HxWxD):
190 x 130 x 61 mm.
Mounting holes:
Ø 5mm
Weight:
1 kg (2.2 lbs)
Approvals
EMC directive:
89/336/EEC
Automotive directive:
95/54 EC
CE marking directive:
93/68/EEC
Voltage ripple:
10mV rms
Transient voltage protection:
Meets ISO7637-2
Electrostatic voltage protection:
Meets ISO10605,14892, 8kV contact, 15kV discharge
Output noise:
Meets CISPR25 and VDE0879-3
Safety:
EN60945, annex A
Setpoints software
Default setting
Low input voltage switch off level
20.0V; three step charger mode: 24.0VDC.
Low input voltage switch off delay
30 seconds
Low input voltage switch on level
22.0V; three step charger mode: 26.0VDC.
High input voltage switch off level
32.0V
High input voltage switch on level
30.0V
