I-Gard DSP-OHMNI, Manual

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This setting must be set according to the current limiting value of the grounding resistor of the HRG system. The de-
fault value is 1A. To change the number, select the value on the drop box. The final value must be between 01 and 16
for 1-16A range.
Alarm Level Setting
The user may select from 10% to 90% of the neutral voltage displacement as a threshold in 10% increments.
The DSP-OHMNI is normally shipped with 50% level selected. Changing this value will require the user to setup the
feeder modules afterwards, since they are not automatically updated to the new alarm level. This will require Use of
the next setup procedure. If a new feeder module has been installed at a later date it will have to be setup also so that
the system is consistent.
GENERATOR mode should be used when the DSP is installed on a standby switchboard that provides control power
to the DSP so that it is always on and it is desired to suppress the “CHECK DDR2 FUSES” alarm that would normally
exist when the bus is de-energized.
Normally on the occurrence of an alarm when the MUTE button is pressed, the DSP-DPS general alarm relay (Form
C contact on terminals 27, 29, 31) is reset and the local annunciator is muted. This is the operation when the MUTE
ALARM setting is ENABLED. The default setting for the MUTE ALARM is ENABLED.
When the MUTE ALARM setting is DISABLED, then on the occurrence of an alarm when the MUTE button is pressed,
the DSP-DPS general alarm relay (Form C contact on terminals 27, 29, 31) is not reset but the local annunciator is
still muted. This setting is typically chosen when the general alarm relay is being monitored by a building automation
system, for instance.
After MUTE is pressed, the system will be MUTED until the Mute Delay Time is reached. Once reached, the system
will be UNMUTED.
Feeder Module Set-up
Figure 13: Feeder Module Status Page
To setup the Feeder Modules, enter Admin mode, and from the HOME screen, press Settings
▸
FEEDER MODULE
SETTINGS.