Latched/Unlatched (Auto-Reset) Alarm Setpoint; Activate On Overvoltage Alarm Setpoint; Activate On Undervoltage Alarm Setpoint; Activate On Voltage Phase Loss Alarm Setpoint - Eaton Cutler-Hammer IQ DP-4000 Instructions For Installation, Operation And Maintenance

IQ DP-4000
SECTION 5 - PROGRAMMING THE IQ DP-4000
5.12.2 Latched/Unlatched (Auto-reset) Alarm
Setpoint
This setpoint allows the IQ DP-4000 to operate in one
of two ways - the latched mode or the unlatched mode.
See Table 5.J for setting this option.
•
Latched Mode. In the latched mode, you can only
reset an active alarm manually (either from the
faceplate, the reset input, or over PowerNet /
IMPACC). The alarm will not automatically clear
once the reset conditions are met. If the alarm
condition still exists, you cannot reset the alarm
unless you disable it.
•
Unlatched Mode (auto-reset). If an alarm occurs,
the DP-4000 will automatically reset the alarm
when the reset conditions are met, based on the
program settings (for example, reset thresholds and
reset delays). The DP-4000 will not reset if the
alarm condition still exists.
Alarm 1 Alarm 2
S3.6 S3.7
S2.2 S2.2
Table 5.J Latched/Unlatched Settings

5.12.3 Activate on Overvoltage Alarm Setpoint

This setpoint activates the selected alarm on an
overvoltage condition. When enabled, the IQ DP-4000
compares the metered line-to-line voltage of each
phase to the overvoltage detection level (see 5.12.12
p.29), and activates the alarm if the threshold is
exceeded for a time greater than the alarm delay on
any phase (see 5.12.10 p.28). See Table 5.K for setting
this option.
Alarm 1 Alarm 2
S3.6 S3.7
S2.3 S2.3
Table 5.K Activate on Overvoltage Settings

5.12.4 Activate on Undervoltage Alarm Setpoint

This setpoint activates the selected alarm on an
undervoltage condition. If enabled, the IQ DP-4000
compares the metered line-to-line voltage of each
phase to the undervoltage detection level (see Section
5.12.13), and activates the alarm if the metered voltage
is below the threshold for a time greater than the alarm
delay on any phase. See Section 5.12.10 (p.28) and
Table 5.L for setting this option.
Position
(Set all 8 S2 switches)
OFF for Unlatched
ON for Latched
Position
(Set all 8 S2 switches)
OFF disables Activate on
Overvoltage
ON enables Activate on
Overvoltage
Alarm 1 Alarm 2
S3.6 S3.7
S2.4 S2.4
Table 5.L Activate on Undervoltage Settings
5.12.5 Activate on Voltage Phase Loss Alarm
Setpoint
This setpoint activates the selected alarm on a voltage
phase loss condition. A voltage phase loss occurs when
the line-to-line voltage on any phase is less than 50% of
the nominal line voltage.
When this alarm is set, the IQ DP-4000 compares the
metered voltage to 50% of the selected nominal voltage
(see Section 5.5 p.23), and activates the alarm if a
voltage phase loss exists for a time greater than the
alarm delay (see 5.12.10 p.28). See Table 5.M for
setting this option.
Alarm 1 Alarm 2
S3.6 S3.7
S2.5 S2.5
Table 5.M Activate on Voltage Phase Loss Settings
5.12.6 Activate on Voltage Phase Unbalance Alarm
Setpoint
This setpoint activates the alarm on a voltage phase
unbalance condition. The IQ DP-4000 compares the
metered voltage to the voltage phase unbalance
detection level (see 5.12.14 p.29), and activates the
alarm if the maximum deviation between any two
phases of the metered voltage exceeds the threshold
for longer than the alarm delay (see 5.12.10 p.28).
Table 5.N shows the settings for this option.
Alarm 1 Alarm 2
S3.6 S3.7
S2.6 S2.6
Table 5.N Activate on Voltage Phase Unbalance
Settings
TD 17548B
Position
(Set all 8 S2 switches)
OFF disables Activate on
Undervoltage
ON enables Activate on
Undervoltage
Position
(Set all 8 S2 switches)
OFF disables Activate on
Voltage Phase Loss
ON enables Activate on
Voltage Phase Loss
Position
(Set all 8 S2 switches)
OFF disables Activate on
Voltage Phase Unbalance
ON enables Activate on
Voltage Phase Unbalance
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