HID EDGE EVO EH400 Hi-O Controller Installation Guide - Manual (Page 4)

EDGE EVO Hi-O Networked Controller
EH400
82000-920 C.0
INSTALLATION GUIDE 4 ©2009 - 2011 HID Global Corporation. All rights reserved.
C - Compute and Compare Overall Current Draw
Calculate the total current draw for all door peripherals, all Hi-O interface devices, and all Hi-O enabled readers with
the following equation, adding terms as required.
I
total
= I
dps
+ I
mag
+ I
rex
+ I
alarm
+ I
Hi-O iCLASS reader
+ … + I
EDM-M
For this example, the total current draw is shown.
I
total
@ +12VDC = 15mA + 300mA + 28mA + 70mA + 160mA* + 40mA* = 613mA
I
total
@ +24VDC = 15mA + 150mA + 38mA + 70mA + 160mA*+ 40mA* = 473mA
* Notes:
a. The EDM-M draws 40mA standby current.
b. The Hi-O iCLASS reader requires a +24VDC to +12VDC converter module (EDGE EVO Hi-O Voltage Module
- EVM), adding approximately 5 to 10mA for overall load requirements.
Compare the required current draw (I
total
) to the output current capacity of the EH400 (see “Specifications” on page
1) to select the EH400 power scheme. The CAN DC PWR Output represents the entire power output capacity of
the EH400.
Device Port Conditions V out I out
Hi-O Networked Controller
(EH400)
CAN DC PWR
Output (MAX)
AUX +12/24 VDC Input +10.8 to
+24VDC
1.2Amp
PoE Input +24VDC (NOM) 400mA
In this example, the EH400 provides sufficient power when operating with +12/+24VDC auxiliary power supplies.
Directly connect the door peripherals identified in “Step 1 - Identify System Components” on page 2 to the I/O ports
of the EDGE EVO Hi-O Edge Door Module (EDM-M). Consult the EDM-M datasheet to determine the available current
capacity for the selected input power scheme of the EH400.
Ensure all door peripherals connected to the Strike/AUX relays and the Reader DC PWR Output or both do not exceed
1.2 Amps (AUX Input) or 400mA (PoE Input) combined. Alternatively, connect the door peripherals to the Strike/AUX
relays configured for Dry contact up to 2 Amps per relay.