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Output Voltage Range at Input
interface (12V)
Max output current at input
interfaces (12V)
RS485 BUS interfaces
Voltage range at RS485 busses
Max output current at RS485 bus I/O
devices
Max output current at RS485 bus
Downstream
Maximum Output Loading of Power Supply
Use the following guidelines unless you are using Power over Ethernet (PoE+). A
maximum current capacity of 3000 mA @ 12±2 VDC is available for all external
devices combined when the unit is powered by PSU.
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Note: You can find the power consumption amounts of devices by referring to the products'
documentation or by using a current meter.
150
DrCnt Door 1-4,
Rex Door 1-4,
Aux Inputs IN 9-16
RS485 BUS I/O devices @ RJ45,
RS485 BUS I/O devices @ screw
terminal block,
RS485 BUS Downstream @ RJ45
RS485 BUS I/O devices @ screw
terminal block
RS485 BUS I/O devices @ RJ45
RS485 BUS Downstream @ RJ45
Maximum current for reader port is 500 mA per door (= 2 Reader Connections).
Maximum current for relay outputs at self-wetted contact is 750 mA per door (=
2 Relay connections).
Door
1: Rel1/RelAUX1 (for MPA2C3-4, RelAUX1 = Door 3)
Door
2: Rel2/RelAUX2 (for MPA2C3-4, RelAUX2 = Door 4)
Maximum charge current for the battery wired in series is 128 mA.
External power is limited to 500 mA/12±2 VDC per AUX Output (2X).
RS-485
Interface bus power is limited to 500 mA/12±2 VDC.
10VDC ~ 14VDC
500mA
10VDC ~ 14VDC
500mA in total for RS485 Modulbus
combined over RJ45 and screw terminal
block RJ45, limited to 500mA
500mA in total for RS485 Modulbus
combined over both RJ45
MPA2C3 Installation Guide
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