Installation Requirements
10
Power Requirements
The standard iSTAR Edge uses a UL Listed 603 External Power Supply, such as the Software
House apS or uses a Power Over Ethernet (PoE) injector with UL listed surge protector.
To ensure adequate power, calculate the total power requirements of iSTAR Edge and its
related hardware, as follows.
Add the total current power for components in the system (modules, relays, optional
modules, readers, and wire resistance).
iSTAR Edge Components and Boards
Table 3 shows the power requirements of iSTAR Edge components and attached boards.
a
RM-4 board has only been evaluated by UL with RM Series readers (RM 1,2,3)
b
RM-4E boards have only been evaluated by UL for use with RM-DCM-2 enclosure.
iSTAR Edge Input Power Rating
The iSTAR Edge has the following input ratings when using an external power supply:
12 VDC, 3.8 A
24 VDC, 3.1 A
Individual/Total Loads
RS-485 Reader Power Outputs: 10.6-12.5 VDC, 1.5 A max each.
Wiegand Reader Power Outputs: 10.6-12.5 VDC, 350 mA max each.
Total of all Reader and AUX outputs combined (RS-485 & Wiegand) not to exceed 1.5 A
Four (4) activated relay coils = 100 mA, 25 mA/relay
One I/8 module – 12 VDC, total= 125 mA
One R/8 module – 12 VDC, total= 325 mA (125 ma + 25 mA for each active relay (max 4))
R/8 relay contact ratings – 30 VDC at 3A (resistive)
Table 3: Component and Board Power Requirements
Component/Board Current Draw at 12VDC
iSTAR Edge 400 mA with LCD - no load
RM-4 board
a
80 mA without LCD - no load
180 mA with LCD - no load
RM-4E board
b
125 mA - no load
I/8 board 125 mA - no load
R/8 board 150 mA - no active relays.
Add 20 mA for each active relay
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