19
The operations described in this section must be performed by authorized electricians or qualified
technical personnel. If you have any difficulties, contact the manufacturer or agency.
Warning
⚫
Tighten the connections terminals to enough torque moment, refer to Table 2-3, and please
ensure correct phase rotation.
⚫
Before connection
，
ensure the input switch and the power supply are off
，
attach warnings label
to warn not to operate by others
⚫
The grounding cable and neutral cable must be connected in accordance with local and national
codes.
⚫
When the cable holes does not goes through by cables, it should be filled by the protective ring.
2.7 Control and Communication Cables
The rear panel of the cabinet provides dry contact interface(J2-J9) and communication interface
(RS232, RS485, SNMP, Parallel card interface and USB port)
，
as it is shown in Fig.2-6.
Fig.2-6 Dry contact &communication interface
2.7.1 Dry Contact Interface
Dry contact interface includes port J2-J11 and the functions of the dry contact are shown in Table
2-5.
Table 2.5 Functions of ports
Port
Name
Function
J2-1
TEMP_BAT
Detection of battery temperature
J2-2
TEMP_COM
Common terminal for temperature detection
J3-1
ENV_TEMP
Detection of environmental temperature
