Johnson Controls D600-AP, Приложения к руководству пользователя, Страница: 4 / 17

Connecting Serial Controllers to the P2000 Comark Server Running Software Version 3.11
Preliminary – This information may change.
4
Current Loop Converter
The D620, D620-TIU, D600-AP (Version PS 155B or higher), and S320 controllers
communicate with the system via the Johnson Controls® proprietary Nodal Protocol B. The
current loop converter converts standard serial communication to Nodal Protocol B to allow
the P2000 Database Server to communicate with these controllers.
Current loop converters are available in two models:
• Model PC232-S4-1 Accommodates 4 loops and operates on 120 VAC
• Model PC232-S4-2 Accommodates 4 loops and operates on 240 VAC
Both models use the same type of enclosure for mounting. If installing only one 4-loop
converter, communication can be established with up to 64 controllers. If installing two
4-loop converters, communication can be established with up to 128 controllers. The
enclosure contains a tamper switch, transformer, EMI line filter, and current loop converter
Printed Circuit Board (PCB).
Specifications
The environmental specifications for the Field Panel Interface board are the same as for the
computers. The specifications of the current loop converter are listed in Table 1.
Table 1: Current Loop Converter Specifications
Item Specification
Number of Channels per PCBA
4
Input/Output
RS-232 to current loop and current loop to RS -232
Number of Serial Controllers per Channel 16
Ambient Temperature 32° to 122°F (0° to 50°C)
Relative Humidity
0 to 95%
Ventilation
Free flow of air over all exposed surfaces
Power Requirements:
PC232-S4-1
PC232-S4-2
120 VAC, 125 milliamps
240 VAC, 70 milliamps
PC232-S4-X Converter Installation
Install the PC232-S4-X enclosure on a wall or other mounting surface in a restricted-access
area with an ambient temperature between 32° and 122°F (0° and 50°C) and a relative
humidity between 0 and 95 percent.
Note:
High heat and humidity can be harmful to electronic equipment and contributes to
early component failure. Long life and reliable operation can best be obtained by installing
the converter in an environment which is comfortable to a person.
Suggested installation locations include a locking utility closet, a crawl space, or inside a
suspended ceiling (if necessary). Install the unit so the door can swing fully open to the right.
The location must allow free flow of air over all exposed surfaces.