E30 MK2Digital Pressure Controller

Four pressure switches in one. The E30 MK2 digital pressure switch can be configured to operate as a loss-of-prime switch, pressure guard for high/low protection, single-point snap-action switch, or dual-pump controller — 16 unique functions across 4 operating modes.

Features

Very simple to program
Multi-voltage operation
Displays pressure and set points
Displays running time
Powerful 40 A solid-state drive
Dedicated 16 A alarm relay
Detachable electrical housing
20 bar (290 psi) pressure rating
Wall mounting kit included
Accepts 2 remote inputs
Weatherproof housing

The E30 MK2 Digital Pressure Switch is available in thermoplastic and DR brass construction with a 1/4" BSPF process connection. The standard model operates from 220–240 V AC or from 24 V AC/DC; a dedicated 12 V DC model is also available.

More Information

Ordering — Available Models

Model Number	Description
E30-MK2	Standard model — 220–240 V AC or 24 V AC / 24 V DC operation
E30-MK2-12	Low-voltage model — 12 V DC operation only

Operating Limitations

Ambient temperature range	1 °C to 50 °C
Liquid temperature range	1 °C to 60 °C
Ingress protection rating	IP64
Maximum operating pressure (static or dynamic)	20 bar / 290 psi
Minimum burst pressure (all models)	> 30 bar / 435 psi
Trip pressure range	0–2000 kPa or 0–290 psi in 1 kPa / 1 psi steps
Snap pressure range (Mode 3 only)	1–2000 kPa or 1–290 psi in 1 kPa / 1 psi steps
Snap pressure differential (Mode 3 only)	7–140 kPa or 1–20 psi in 7 kPa / 1 psi steps
Starting pressure range	0–2000 kPa or 0–290 psi in 1 kPa / 1 psi steps
Stopping pressure range	0–2000 kPa or 0–290 psi in 1 kPa / 1 psi steps
Minimum pressure differential (Modes 1 & 2 only)	1 kPa or 1 psi (practical limit ≈ 7 kPa / 1 psi)

Electrical Data

Supply voltage (standard model)	220–250 V AC or 18–25 V AC/DC (multi-voltage input)
Supply voltage (12 V DC model)	11–14 V DC
Maximum motor load (all models)	Single-phase motors up to 2.4 kW max at 240 V AC (P1). 3-phase motors of all sizes via a suitable interposing contactor — no maximum motor size applies.
Relay 1 contact rating	16 A at 240 V AC resistive
Relay 2 contact rating	16 A at 240 V AC resistive

Functions

# = user-settable

#Selectable pressure units (kPa or psi)	—
#Start-up timer	Fully adjustable and self-terminating. 1 second to 4 minutes in 1-second increments.
#Run-on timer	Fully adjustable and self-terminating. 1 second to 15 minutes in 1-second increments.
#Delayed re-starting timer	Once stopped, delays the restart. 1 minute to 99 hours 59 minutes in 1-minute increments.
#Batch control	Set a specific run time for the pump. 1 minute to 99 hours 59 minutes in 1-minute increments.
#Auto restart if run dry	Single or multiple attempts. 1 minute to 99 hours 59 minutes in 1-minute increments.
#Trip pressure	Fully adjustable and can be turned on or off. 0–2000 kPa / 0–290 psi in 1 kPa or 1 psi steps.
#Snap pressure	Set a single switch point. Mode 3 only. 1–2000 kPa / 1–290 psi in 1 kPa or 1 psi steps.
#Snap pressure switching differential (delta)	Mode 3 only. 7–140 kPa / 1–20 psi in 7 kPa or 1 psi steps.
#Starting pressure	Fully adjustable and can be turned off. 0–2000 kPa / 0–290 psi in 1 kPa or 1 psi steps.
#Stopping pressure	Fully adjustable and can be turned off. 0–2000 kPa / 0–290 psi in 1 kPa or 1 psi steps.
#Anti-cycling	Controls the number of motor starts per hour. 1 to 1800 starts/hour.
#Anti-cycling sensitivity	Avoids nuisance tripping. Adjustable 2 to 50 sequential starts.
#Output relay select (R1 or R2)	User can configure the E30’s output to be relay 1 or relay 2.
#Output relay action (NO or NC)	User can configure the E30’s output relay to be normally-open or normally-closed.
#Alarm relay condition (7 selectable)	Alarm relay can be set to close on 7 selectable normal or fault conditions.
Pressure / set-point display	Displays system pressure, high & low pressure set points, and snap pressure point in preferred units.
Fault diagnostic display	Displays the reasons for faults and alarms on its LCD screen.
Over-pressure alarm	Automatically invoked at 22 bar (319 psi).
Remote start/stop	Start and stop a pump using an external low-voltage switch.

Dimensions

4 Operating Modes

The E30 MK2 includes 16 unique functions selectable across 4 operating modes — loss-of-prime, pressure guard (high/low), single-point snap-action, and dual-pump control. Different functions are available in different modes; see the printed data sheet PDF below for the full mode × function matrix.

3-Phase Pumping Systems

The E30 MK2 can be used to control either single-phase or 3-phase pumps, provided a 220–240 V AC or 24 V AC supply is available at the installation site. For 3-phase motors the E30 drives an interposing contactor — use the Pump Controller Power Calculator to size the contactor and verify cable rating + voltage drop.

Open the Pump Controller Power Calculator →

Application Restriction

The E30 MK2 is an industrial control device, specifically designed for use in industrial, agricultural and mining applications. It must never be used for any other application. Installation must be carried out by a qualified pump engineer, and all electrical work by a licensed electrician.

Hazardous Areas

The E30 MK2 is not certified for use in hazardous areas and must not be installed in any area classified as hazardous under AS/NZS 60079.10 (Zone 0, 1, 2, 20, 21 or 22).

Serviceability

The E30 MK2 digital pressure switch is not user serviceable. However, spare parts are available from Kelco Engineering or from your distributor.