DART Controls DP4 Control Series Instruction Manual page 17

Mode 6: Output 100% When S2 High
When the S2 input is at an electrically high (+5V) state or allowed to float disconnected,
the DP4 will force its output to 100%. Once the S2 input returns to an electrically low state
or wired to the unit's common, the output will once again correspond to the display value.
Mode 7: Lock Set Point when S2 is High
"LOC" is displayed when one of the front panel buttons is pressed with S2 in an electrically
High State. Program by bringing S2 terminal P1-9 to electrically Low state or wire to unit's
Common terminal P1-6. Enter Program Mode, Select Parameter 35, Press Enter, select
value item 7, Press Enter again.
Note: (Select a value 1-6 to Exit the LOCK Set Point than press enter) Select Parameter
0 and press enter to Exit Program Mode. Activate for the new changes to take effect by
cycling AC power Off/On.
Parameter 36 – Signal Input 2 (S2) Setpoint
When the S2 configuration, parameter 35, is set to one of the setpoint (jog) modes(modes 3
or 4), this parameter defines the jog setpoint in display units. This parameter is always set in
display units.
Parameter 40 – Alarm 1 Conditions
This defines which conditions will result in the alarm 1 output being activated.
Mode 0: Always Inactive
The alarm output will remain in an inactive state. In this state, the NC and C contacts
will be internally electrically connected.
Mode 1: Always Active (When Power Is Applied)
The alarm output will become active when the power is applied to the unit. In this state,
the NO and C contacts will be internally electrically connected.
Mode 2: Active When Display Value Above Limit
The alarm output will activate when the displayed value is above the upper limit setting,
parameter 48.
Mode 3: Active When Display Value Below Limit
The alarm output will activate when the displayed value is below the lower limit setting,
parameter 47.
Mode 4: Active When Display Value Inside Range
The alarm output will activate when the displayed value is greater than or equal to lower
limit settings and less than or equal to the upper limit setting.
Mode 5: Active When Display Value Outside Range
The alarm output will activate when the displayed value is less than the lower limit setting
or greater than upper limit setting.
Mode 6: Active When Display Value Results in a Zero or Equivalent Output
If the display is set to a value that produces a zero output or is within the programmed
deadband, then the alarm is activated.
Mode 7: Relay Direction Control Mode
In this mode, the relay output will determine which direction is being requested. This will
typically be used with Item 10 modes 9 & 10.
Forward = relay not energized; Reverse = relay energized
Parameter 41 – Alarm 1 Output Style & Reset Configuration
This setting configures the output mode and reset method for the alarm output.
Mode 1: Constant & Auto Reset
In this mode, the alarm output will remain active until the alarm condition ceases to exist.
The alarm will automatically reset when the conditions return to normal.
Mode 2: Constant & Manual Reset
In this mode, the alarm output will remain active until the alarm is reset manually. See
parameter 42 for details.
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