Model 2410 Pump Controller
Provides digital readout of process signal and also provides 4 on-off outputs as well as high, low and signal loss alarms.
FEATURES
- Extremely accurate, repeatable and easy to use.
- Each output may be individually programmed for PUMP UP or PUMP DOWN operation.
- Digital indication of process variable and setpoints in desired engineering units.
- Setpoints are adjusted from front of instrument via 25-turn potentiometers.
- LED output status indicators
- Standard and optional time delays are available to override system surging during startup and operation.
Description
The Essex Engineering Model 2410 Pump Controller is designed specifically for controlling the filling and emptying of tanks, vats or basins by means of one or more pumps. It accepts standard input signal levels of 1-5 VDC, 4-20mADC and special ranges from a continuous level or pressure transmitter.
The incoming analog process signal is displayed on the front of the instrument via a 3-1/2 digit LED readout. This same display is also used to set the various turn on and turn off points for the control and alarm functions.
Four control outputs are available to activate remote relays. Each has an independent turn-on/turn-off setting of 0 to 100% of full scale. An indicator lamp is illuminated when its output is energized. Turn-on and turn-off points are set by means of their associated 25-turn potentiometers on the face of the instrument. A control knob is used to select each point to be calibrated and a red bar lights adjacent to the potentiometer being calibrated. The output relays are remote and use low voltage control in order to avoid high voltage transients when the line voltage devices are switched on and off.
Fill/empty action is field selectable for each control point via the setpoints. Three alarms, each of which has an LED indicator, are provided. These are high and low level, with a signal loss causing the red signal loss LED to flash when activated. The 2410 Controller may be field programmed, via internal DIP switches, to deenergize the control outputs when any alarm condition occurs. An external input signal is also available to deactivate the control and/or alarms when activated.
Standard with the unit is a time delay of approximately 6 seconds per step to inhibit control and alarm action on power up. This allows system parameters to stabilize before the controller initiates a response and stagger starts multiple devices if required. An optional time delay board is available to provide additional timing functions.
Also available, as an option, is a second sensor input. Upon failure of the primary sensor, the unit will automatically switch to the secondary sensor, light the signal loss LED and provide an alarm output.