Detcon 880A-N1R, Руководство по установке и инструкции оператора

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880-N1R
880-N1R Instruction Manual Rev. 0.0 Page 7 of 38
3.0 Installation
The Detcon Model 880-N1R PLC is a 19” Rack Mount enclosure. The 880-N1R is a 19” Rack Mount Unit
and should be securely mounted in a 19” Rack Mount Cabinet or other suitable 19” Rack Mount Enclosure.
Figure 7 provides a dimensional overview of the unit. The unit is 15 inches deep. Several more inches in
depth will be needed if Din-Rail Modules are added.
Care should be given to prevent sharp objects from colliding with the touch screen display as damage to the
display may cause the unit to become inoperative. The screen can be cleaned with a mild detergent and a lint
free cloth. Never use an abrasive cleaner on the display.
ON / OFF
NO COMM
POWER ALARM 1
ALARM 3
ALARM 2
FAULT
10.5"
18.3"
19.0"
12.0"
15.0"
7.5"
0.218"
R0.109"
0.375"
SLOT DETAIL
Figure 7
Dimensional Overview
3.1 Installing I/O Modules
The 880-N1R provides extra Din-Rail space on the back of the unit for the addition of Din-Rail mounted I/O
Modules. There is enough room for the addition of up to 8 modules, but the number of modules that can be
mounted should be determined more by the current load imposed on the unit than by the physical space
provided. The maximum current load is to be restricted to 3Amps. An RS-485 connector is provided for
Modbus™ and power connections to the unit for these Din-Rail mounted modules.
WARNING:
The use of the 880’s 24VDC to power unit mounted Din-Rail modules and external
devices is be restricted to no more than 3Amps maximum ( ≈ 75 Watts). This equates to 5 DA4
Modules (with 20 sensors and/or field devices attached) and 1 or 2 RL4 Modules. Care should be
taken to insure that the total current load of installed modules and other devices utilizing this power
does not exceed this 3Amp rating, as this may cause detrimental damage to the unit and will void the
warranty. An External Power Source should be used to power any and all modules or devices that
exceed this rating. A 3Amp fuse is installed in the unit to limit the current load of this 24VDC Output.
Modules should be mounted on the Din-Rail starting from the right and plugging additional modules in to the
left. An RS-485 cable with the appropriate I/O connector is provided on the right side of the Din-Rail and
should be plugged into the first module.