User's Manual

Installation Guidelines Power Consumption, Connections and Power Supplies
MA2000 Installation and Configuration Guide 26
3.5 Power Consumption, Connections and
Power Supplies
3.5.1 Power Safety Instructions
SAFETY WARNINGS
• When installing or selecting the power supplies:
• Be sure to disconnect all power sources before servicing.
• SC-450 Controller lithium type battery should only be replaced by MobileAccess service
personnel. Risk of exploding if battery is replaced by an incorrect type. Dispose
of used batteries according to the instructions.
• Calculate the required power according to the requirements of the specific installation
and then determine the configuration of the power supplies. The required DC cables will
then be determined by the selected PS configuration.
• Use only UL approved power supplies
• AC and DC power supply cables – only use the power cords supplied with the units
• Battery replacement in units - only the SC-450 controller has batteries. These should
be replaced (when necessary) only by MA Service Personnel.
• Install external over-current protective devices for the system according to the
requirements described in section
3.5.2.
3.5.2 Power Consumption of Units
Table 3-1. MobileAccess Power Requirements
Unit Type Voltage Input
Typical Power
Consumption
Maximum Current
Consumption
MA2000 Remote
Cabinet
20 to 48VDC 25W 1.25A
MA2000-Lite 20 to 48VDC 3W 0.15A
RU 2000 20 to 48VDC 25W 1.25A
Add-on Unit 1200 25 to 48VDC 50W
2.0A
RIU 20 to 48VDC 12W
0.6A
Base Unit 20 to 48VDC 14W
0.7A
MA410/MA430
Controller
20 to 48VDC 10W
0.5A
SC-450 Controller 36 to 60 VDC 10W
0.2A
MA850/MA860 20 to 48VDC 20W
1.0A
3.5.3 Circuit Breakers
Install fuse protections for the system according to the following criteria: