PS200 Configuration & Operation Guide
OPTIONS & FEATURES
Page 86
Secondary Protection
To provide protection from dry-running and operating against a closed discharge valve in pressure, level,
temperature, and speed control modes, the PumpSmart secondary protection feature may be used. This feature
may also be used to provide inter-lock capabilities, such as for lubrication system starting. In these cases,
additional system condition inputs (e.g. level switch, pressure switch, flow switch, etc…) are used to alert
PumpSmart of conditions that require protection of the pump.
Discharge Header
1
Flow Switch
Speed Signal
Speed Control Secondary Protection
In the above example, a unit is being controlled by an external speed signal. A flow switch is added to the pump
installation and wired into the PumpSmart controller. This provides dry run and shutoff protection.
Once wired, parameter 25.06 SECONDARY PROTECT A or 25.07 SECONDARY PROTECT B must be set to ALARM or
ALARM AND CONTROL. The response being:
1. ALARM & CONTOL- In this response, PumpSmart will issue a warning and then either shut down or reduce
speed depending on your settings. At this point the pump will behave similar to the description in
MINIMUM SPEED. Alarm & Control is the recommended setting.
2. ALARM only - In this response, PumpSmart will simply issue an alarm/warning, but continue to operate. The
alarm only mode may result in damage to the pump if a protection limit fault occurs.
Parameter
Name
Value/Range
Notes
25.06
25.07
SECONDARY PROTECT A
SECONDARY PROTECT B
DISABLED
[default]
ALARM & CONTROL
ALARM
Summary of Contents for PumpSmart PS200
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