OM AGSD-1 9
Component Description
Hardware Structure
The controllers are fitted with a 16-bit microprocessor for running the control program.
There are controller terminals for connection to the controlled devices (for example:
solenoid valves, expansion valves, chilled water pumps). The program and settings are
saved permanently in FLASH memory, preventing data loss in the event of power failure
without requiring a back-up battery. The controllers also have optional remote
communication access capability for a BAS interface using standard protocols.
The Advanced MicroTech II controllers used on AGS-D chillers are not interchangeable
with previous MicroTech II controllers.
Keypad
A 4-line by 20-character liquid crystal display and 6-button keypad are mounted on the unit
and compressor controllers.
Figure 2, Keypad
Air Conditioning
LARM
VIEW
SET
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Advanced
The four arrow keys (UP, DOWN, LEFT, RIGHT) have three modes of use.
1. Scroll between data screens in the direction indicated by the arrows (default mode).
2. Select a specific data screen in the menu matrix using dynamic labels on the right side
of the display such as ALARM, VIEW, etc. (pressing the MENU key enters this mode).
For ease of use, a visual pathway connects the appropriate button to its respective label
on the screen.
3. Change field values in setpoint programming mode as follows:
LEFT key = Default (D) RIGHT key = Cancel (C)
UP key = Increase (+) DOWN key = Decrease (-)
These four programming functions are indicated by a one-character abbreviation ( ) on the
right side of the display. This programming mode is entered by pressing the ENTER key.
vary an electric motor’s speed.
See the “
Using the Controller” section beginning on page 58 for detailed instruction on
controller operation.
MENU Key Left Arrow w/ Red Alarm Light Behind
ARROW Keys (4)
ENTER Key
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