AERCO Control System (ACS) - Manual (Page 49)

MC2: 04/23/13 Page 49 of 144
GF-131
AERCO Control System (ACS)
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
Installation, Operation, and Maintenance Manual
OMM-0081_0D
permitting password entries, the SETUP MENU is also used to enter the date and time.
Descriptions of the SETUP MENU options follow.
3.5.1 ENTER PASSWORD
The ENTER PASSWORD option allows the Level 1 ( 159) or Level 2 (6817) to be entered.
Once the valid Level 1 password ( 159) is entered, options in all Menus, except the Calibration
Menu, can be changed.
The Level 2 password (
6817) must be entered to view or change options in the Calibration
Menu. Only factory trained personnel should use this Menu.
To enter a password, press CHANGE, and then the UP or DOWN button to select each digit.
Press Change after each digit is selected in order to advance to the next digit. Press Enter when
the desired password is displayed
3.5.2 DATE AND TIME MENU OPTIONS
The Setup Menu options associated with date and time are as follows:
SET MONTH 01 -12
SET DATE 01 – 31
SET YEAR 00 – 99
SET HOUR 00 -23
SET MINUTE 00 – 59
SET DAY OF WEEK SUNDAY TO SATURDAY
3.6 RS232 MENU
The RS232 MENU options permit the ACS to communicate with an external Energy
Management System (EMS) or Computer via the RS232 Port wiring terminals labeled RXD,
TXD, ISOGND on the ACS. The RS232 Menu options are used to select the RS232 Mode,
Baud Rate, Modbus Address, Network Timeout period and Modbus Pass-Thru feature for the
ACS.
3.6.1 RS232 MODE
The RS232 MODE option allows the selection of the type of communication desired at the
RS232 port: NORMAL (dumb terminal) or MODBUS SLAVE (Modbus Protocol). When the ACS
is being controlled by an external Energy Management System (EMS), via Modbus Protocol, set
this option to MODBUS SLAVE (default). If the EMS being used contains only a RS485 port, a
RS485-to-RS232 Converter is required.
3.6.2 RS232 BAUD RATE
The RS232 BAUDRATE option sets the communication Baud Rate between the ACS and the
EMS. Available settings include 2400, 4800, 9600 (default), or 19200. Both the ACS and EMS
MUST be set to the same baud rate to enable the communication link.
3.6.3 MODBUS ADDRESS
The MODBUS ADDRESS option sets the ACS address when operating as a Slave on a
Modbus Network. The address can be set from 128 (default) to 247.