7
Redundancy Management & Master Control:
The controls
shall be capable of redundancy management & master control
setup / “Handshake” of groups of up to 16 units without
addition of any hardware.
Alarms:
Controls shall be capable of storing last 100 alarms,
identified by type, date stamped & indicating also the
temperature & humidity conditions when the alarm occurred &
also the setpoints of temperature & humidity when the alarm
occurred. There are 36 alarms & all alarms can be either set as
“ serious ” or “ non-serious”. A serious alarm shuts down the
unit.
Hours Thresholds:
It shall be possible to to set run hours
thresholds for major components to facilitate preventative
maintenance.
Manual Procedure:
With the unit powered off & the controls
powered on it shall be possible to check all analogue & digital
outputs & to run the devices.
Temperature & Humidity Zone setback:
It shall be possible to
create up to 4 periods in a 24 hour period with dedicated set
points of temperature & humidity.
System Auto Restart:
For startup after power failure, the unit
shall automatically restart with an ability to stagger the starting
of multiple units by setting a time delay of up to 999 seconds.
Security:
The microprocessor shall have multiple levels of
security (5 no. 4 digit passwords) to prevent unauthorized
parameter adjustment.
Time Delays:
It shall be possible to create or adjust if necessary
the unit on time delay, unit off time delay, compressor
interstage delay, compressor minimum run time, compressor
minimum stop time, heater interstage delay, winter start time
delay, temperature alarm time delay, humidity alarm time
delay, serious alarm time delay & non-serious alarm time delay.
Sensor Calibration:
It shall be possible to recalibrate the
temperature & humidity sensors in software.
Inputs / Outputs:
It shall be possible to view the current status
of all inputs & outputs while the unit is running.
Set & Hysteresis adjustment:
It shall be possible to adjust the
set & hysteresis % values of stepped outputs within the control.
BMS / BAS interfacing:
It shall be possible with the addition of
a simple communications card to communicate all Analog,
Digital & Integer variables in the following protocols : LON
FTT 10, BACnet over RS485 MSTP, BACnet over TCP/IP,
SNMP over TCP/IP, MODBUS over RS485, Metasys & OPC
Server.
Remote Display panel:
It shall be possible to connect an
additional shared LCD display which is wired back to the unit
& this remote display shall have full control access to the unit
from a distance of up to 100m.
Remote Temperature & Humidity sensing:
It shall be possible
to remotely locate the Temperature/Humidity sensor to better
meet the sites cooling needs. The sensor can be located a
distance of up to 30m from the unit.
GUIDE SPECIFICATIONS
