Table 89: Warning messages
Message Description
WARNING – UPS –
LINE LOW BATTERY
VOLTAGE
This auto reset warning is set when all of the following are true:
• Control Voltage digital input is high (indicates line power is
available)
• Battery Voltage < Line Low Battery Voltage Threshold
It releases when Battery Voltage > Line Low Battery Voltage Threshold +
0.1 V
WARNING – UPS – NOT
CHARGING
This auto reset warning is set when all of the following are true for 5
continuous seconds:
Control Voltage digital input is high (indicates line power is available)
• UPS Line / Charging digital input is low (indicates UPS not
reporting in charge mode)
It releases when any of the following are true:
• Control Voltage digital input is low (indicates line power is lost)
• UPS Line / Charging digital input is high (UPS is reporting in
charge mode)
WARNING – VSD
– INPUT VOLTAGE
IMBALANCE
Line voltage imbalance shall be calculated, for every VSD
communications cycle, as:
where V
ab
, V
bc
and V
ca
are line-to-line total rms voltages received from
the drive, max is the function which selects the largest of its arguments,
and:
If Vimb% exceeds 5% continuously for 45 seconds, the warning will be
displayed. The 45 second timer shall reset and the warning shall clear if
three consecutive imbalance readings fall below the 5% threshold.
Table 90: Routine shutdown messages
Message Description
LOCAL STOP A local shutdown command has been received by pressing the Keypad Stop key.
REMOTE STOP
A shutdown command has been received from a remote device. Remote Stop
commands can be received in Digital Remote mode via I/O Board TB4-7/8 or in
BAS (ISN) (Integrated Systems Network) Remote mode via the SC-Equip Gateway
serial communications. If the chiller is running when this occurs, the chiller
performs a soft shutdown.
YMC
2
Mod B with OptiView
™
Control Center
114
To Next Page
Loading...
