Electrical Wiring; Operation - Hitachi HC-A8MB Installation And Operation Manual

Network / modbus gateways
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ELECTRICAL WIRING

4 ELECTRICAL WIRING
Name
X1
Power supply (1)
X3
Ethernet (1)
X4
H-LINK (1)
X5
RS485 (1)
X6
USB (1)
?
N O T E
(1) These cables must be field supplied.
4.1 DSW CONFIGURATION
Factory
Name
Function
setting
SW1
Configuration
?
N O T E
(*)No applicable to HC-A64NET.

5 OPERATION

5.1 COMPATIBILITY
These devices are not compatible with any of the following Hitachi controllers:
- Centralised remote controls
- Building air conditioning controls(*)
- Other Hitachi BMS Gateways (LONWORKS, BACNET, KNX, FIDELIO)
- Other Hitachi MODBUS Gateways
- Other units of the same model
?
N O T E
(*)HC-A64NET is compatible with CSNET Manager.
8
PMML0351A rev.4 - 04/2020
Connection
Use 0.75 mm2 wires which are not lighter than the polychloroprene sheathed
flexible cord (code designation 60245 IEC 57)
Category 5 or higher LAN cables
PC connection: Use a crossed cable (1 cable set available in Net configuration
Kit) for direct connection.
LAN connection: Use a direct cable (field-supplied) for connection to a commercial
distributor (Hub).
Twisted pair shielded cable 0.75 mm².
Shield must be grounded in one side only.
3 cores cable harness 0.75 mm² grounded in one side only. Use different colour
for each cable.
USB Mini-B plug cable (1 cable set available in Net configuration Kit)
Description
SW1-1: Modbus end
resistance (*).
SW1-2: Not used (keep
always "ON")
Cable specification

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