4
Chapter 2
Engineering Installation and Dimension of the
System
2.1Outline and dimension diagram of products
Outline and dimension of JB-QBL-9116E
440
125
128
58
0
Figure 2
‑
1 Case dimension
2.2System installation
2.2.1 Items check
Before installation, check the field equipment at first. After opening the packing box, check
the goods inside the box one by one according to the packing list and the main check contents
including installation and operation instructions, fuse, standby screw and key of the control unit,
and then, if necessary, check appearance of the control box after verification. Please call the
sales personnel of our company immediately in case of any discrepancies found during the check.
2.2.2 Check of engineering configuration
Check packaging list of the control equipment against engineering configuration. The
requirements shall match with the design drawing.
2.2.3 Check and connection of external equipment
Check the conditions of the bus connected with the control unit and measure the insulation
resistance between different loop buses, between bus and ground, as well as load condition of
the loop. Wherein, insulation resistance should be higher than 20M
Ω
and loop impedance
should be lower than 40
Ω
.
Check the status of circuit equipment with debugging device, that is, whether equipment
number, coding and operating status comply with the design requirements, eliminate existing
faults and prepare for system connection.
Connect peripheral equipment or connecting line of the system into input terminal of the
system control unit, see instructions on the label for definitions of each terminal. The contact shall
be good. Check with multimeter that it is free of short circuits or open circuits after connection.
2.2.4 Power-on test
After verification by above checks, power on and carry out simple tests of the control unit,
and verify whether power supply and basic functions (such as button and indication functions) of
the control unit operate normally without connecting the peripheral equipment.
