2iB SC10 Bedienungsanleitung

SC10 Single Pump Controller

Installation and User Manual

1. Safety

SAFETY WARNINGS:

Always isolate the power supply before performing any installation work.

Always isolate the power supply before attempting to trace a fault as the pump connected may start without

warning.

The installation shall be performed by an authorised electrician according to local safety regulations.

The SC10 must only be used on pumping equipment that is capable of running dry for short durations.

The SC10 is not to be used in Hazardous Areas or Locations (such as areas with Explosive or Flammable Gas or Dust

Environments).

There are no operator serviceable parts inside. Modification may negatively impact safety and may void warranty.

2. Unpacking, Inspection and Recycling

The delivery comprises of:

1 x SC10 Pump Control Unit

1 x SC10 Installation and Operations Manual. (This document.)

1 x SC10 Quick Reference Guide

If any of these items are missing or damaged at the time of delivery, please contact 2iB Pty Ltd. Please retain the product packaging

and return the product for inspection if damaged.

A 4-20mA CT is required for snore control operation. This can be purchased separately from 2IB.

3. Installation

3.1 Important Installation Requirements

To avoid damage: If the Power Supply is to be earthed then terminal no. 2 (-) may be earthed, but not terminal no. 1

(+).

Check that the rated voltage of SC10 corresponds with the supply line voltage. The SC10 is mounted on a standard 35

mm DIN rail. Ensure that you use the SC10 within its Technical Specifications –see section 8 Specifications.

To ensure accuracy and reliability screened twisted-pair cable is to be used for connection of the Current Transducer for

measuring the pump motor current.

3.2 Remote Snoring Setup Controls for Operator Safety

The Stop Current Setpoint can be set and adjusted using pushbuttons on the front of the pump starter / control panel. This enables

the pump setup, commissioning and setpoint adjustment to be performed without the electrical hazards entailed in opening the

pump starter / control panel doors.

As shown in section 9 SC10 Connections the pushbuttons can be connected to digital inputs on the SC10. It is recommended to

connect / provide pushbuttons for:

Up (Setpoint Adjustment)

Down (Setpoint Adjustment)

Set (Set the Stop Current Setpoint)

Start (Pump Start –needed for commissioning)

If you wish to prevent unauthorised personnel making adjustments then you can install these pushbuttons behind a lockable door

or cover.

3.3 Front-Mounting of SC10 to View Operating Current and Access Pushbuttons

In addition to the standard mounting of the SC10 on a DIN Rail inside the cabinet, two alternative mounting options can be

considered:

A window can be built into the starter cabinet door and the SC10 can be mounted forward of the back-plate / gear-tray

(or on the rear of the door) so that the current display is visible from outside of the panel.

The SC10 can be mounted so that the front of the SC10 protrudes through the door (similar to circuit breakers) thus

providing access to the current display as well as the buttons. Note that the SC10 is neither dust, nor water resistant so

an outer door or cover will be required. (WARNING: Please take into account local and site electrical safety

requirements.)

4. SC10 Operation

Snore or Snooze Control. The SC10 Snore Controller monitors the electrical motor current via a 4-20mA output current

transformer (CT). By monitoring the centrifugal pump current the SC10 detects the low current when no or little fluid is being

discharged (called snoring) and stops the pump from running dry for extended periods. When low current is detected the unit

stops the pump. Note that Snore Control can work on both three-phase and single-phase motors.

The SC10 then pauses the pump operation for a time. The length of pause time before the next pump cycle is automatically

calculated. This pause time increases and decreases automatically to adjust to inflow based upon the time required for the last

pump run. The target duration of the pump run time is set via dip switches. The adaptive control algorithm will automatically

adjust the pump pause time to try to achieve the target run time.

Float Switch Support. The SC10 can operate the pump with no level sensors. Or, it can utilise external level (float) switches

either as the primary means of control or in combination with the snore control. Options Include:

Timer start, Snore stop

High level start, Snore stop

High Level start, Low Level stop

Push button start, Snore stop

Push button start, Low Level stop

Push button stop, Timer start

Push button stop, High level start

The start button will start the pump anytime that it is pushed and it will continue to run until the pump is again snoring or the

low level switch activates.

The SC10 also has a pump cleaning feature. The pump will stop periodically to allow a backflush as water runs back down the

discharge hose. This helps clear the impellor and the suction strainer of debris reducing the chance of blockage and cavitation,

as well as increasing the flow rate and efficiency.

Start-up of the SC10. The SC10 will normally start the pump 30 Seconds after start-up. The pump will run until a stop condition

is reach –snoring is detected or the stop/low float is activated. This pump start will not occur if the stop/low float is active.

4.1 Snoring Detection Explained

What is Snoring?

When the pump starts sucking air (called snoring) the pump flowrate and the pump current drop. This drop in current can be

detected by the SC10. This effect is shown in the graph below.

The Stop Current Setpoint

The Stop Current Setpoint is the current below which the

SC10 considers the pump to be snoring.

As shown in this graph, the pump runs at a Normal Running

Current until it begins snoring –indicated in the graph with

Pump starts snoring here. At this point the current drops to

a lower level.

If this lower Snoring Current is less than the Stop Current

Setpoint then the SC10 stops the pump.

What is the Current Window?

The normal way of setting the Stop Current Setpoint is to

press the Set button when the pump is snoring (see section

5.6). When the Set button is pressed, the Stop Current

Setpoint is set to the measured pump current plus the

Current Window. (Stop Current Setpoint = Measured Current

+ Current Window.) This is done so that the SC10 can reliably detect the snoring condition.

An Example

The operator is commissioning the pump which has a 0-100 Amp CT. They press Start. The pump runs normal at a current of 70%

(70 Amps), then the pump snores and the measured current drops to 50% (50 Amps). The operator hears the pump snoring and

presses the Set button combination.

If the Current Window DIP switches are set for a 10% current window then the Stop Current Setpoint is loaded with 60%.

Measured current when pump is snoring = 50% (50 Amps)

Current Window = 10% (10 Amps)

So, the Stop Current Setpoint is loaded with 50% + 10% = 60% (60 Amps)

The Current Window should be set to enable a Stop Current Setpoint to be set in between the Normal Running Current and the

Snoring Current.

If on the next pump run the measured snoring current is 55% (55Amps) then this will still be detected as snoring and the pump

will be stopped.

Single Phase Motors

Snore detection works identically on single-phase motors as it does on three-phase motors. Note however that on smaller motors

(single- or three-phase) the variation of current with load will be smaller which may make the setup more critical. In particular,

the Current Window setting may need to be smaller. Take a note of the current reading displayed on the SC10 and compare that

for normal operation and snoring and use this as a guide.

5. SC10 Set Up

The initial set up of the relay is done by setting these parameters:

1. CT Current Range

2. Pump Cycle Time

3. Alarm Relay Activation Conditions

4. Float Switch Contact Status

5. Current Window %

6. Stop Current Setpoint

5.1 Current Range & Current Transformer Selection

The SC10 uses a 4-20mA Current Transformer (CT) to measure the motor current. The selected current transformer rated primary

current should be close to the full load current of the

connected load for optimal accuracy but should not

exceed it. Multiple turns of the motor phase wire could

be made through the CT to better match the motor rated

current to the CT.

In the circumstance that this isn’t achievable there are

four current range dip switch selections available 100%,

50%, 25% and 12.5% that increases the current percentage display providing full scale set point ranging setting

i.e. if you have a 0-100 CT with a 50 Amp full load current the output is

only 4mA to 12mA and the percentage of current displayed will only be

50% by switching dip switch 2 (50%) on it increases the display range

resolution to 100% providing full range selection.

Tip: For best accuracy, use (1) Multiple turns through the CT or (2)

Selectable range on the CT in preference to (3) Setting a lower range on the

SC10.

See also section 11 Examples of CT Range and Setup for Starter Panels.

Single Phase Motors. See also the note about single-phase motors in section 4.1 Snoring Detection Explained.

5.2 Pump Run Time Target

When the SC10 is first commissioned a pump run time target should be set,

the run time selection should reflect the time the sump or container is

currently taking to empty by the installed pump. The stop or pause time

duration is controlled by the SC10 controller and will vary based on run and

stop history and programmed adaptive control algorithm to attempt to

achieve the target run time. Setting a pump cycle time target via DIP

switches.

Tip: If the level in the sump rises too high then select a shorter Cycle Time.

Conversely if you want the level to rise higher before the pump starts then

select a longer Cycle Time.

Current Range

Setting

Off

100% (default)

Off

50%

Off

25%

12.5%

Pump Run Time Target

Setting

Off

3 min

Off

5 min (default)

Off

8 min

Off

15 min

Off

30 min

Off

1 h

Off

2 h

4 h

Tip: Generally it is better to have the pump start at a lower than a higher level, so select a Target Run Time which is lower or equal

to what you expect to need.

5.3 Start and Stop Modes

The standard operating mode of the SC10 starts the pump based on the

timer or the high float switch and stops when either the pump snores or

the low float switch activates.

Stop on Low Float Only / Disable Snore Stop: Using DIP Switch 15 you can

disable the pump stop based on the pump snoring so that the pump will

only stop when the low float switch is reached. This can be useful if you

need the pump to stop at a specific level (that of the low float switch).

Start on High Float Only / Disable the Timer Start: Using DIP Switch 16 you can disable pump start based on the timer. This

means that the pump will only start based on the float switch. This may be useful if you want the pump to start at a specific level

(that of the high float switch). This can be useful in hoppers or tanks.

Float Switch Only Operation: By switching both DIP Switches 15 and 16 ON the pump will start on the high float switch and stop

on the low float switch. (Timer start and Snore Stop will be disabled.) This mode can be useful in hoppers or tanks. This same

operating mode can be used to start and stop the pump only on Start and Stop Pushbuttons.

5.4 Alarm Relay Activation

The SC10 has a single alarm output can be set to any combination of four

functions and displayed externally with a fault lamp if desired. Ref DIP

Switches (6, 7, 8, 9) on front of SC10.

CT Fault (diagnostic monitoring of CT)

Sump Low

Sump High

Failed to Run (pump called to run no current detected)

5.5 Stop / Low Level Switch Invert

If a low level switch is used then the switch contact status needs to be set

to normally open or closed. Ref DIP Switch (10) on front of SC10.

Tip: If both the High and Low Level Switches are the same and their

contacts close when the float switch is covered then you will need to set

SW 10 to ON.

5.6 Setting the Stop Current Setpoint

Pressing the Set button combination (+simultaneously) sets the Stop Current to Measured Current

+ Window Current

To Set the Stop Current Setpoint perform the following steps:

1. Ensure that there is enough fluid in the sump or container so the pump doesn’t immediately

draw in air

2. Press the Start button on the relay or on the front of the panel to start pump.

3. When the pump running and is snoring (drawing air), press the Up and Down buttons

simultaneously. The stop current setpoint is now set to the displayed percentage.

4. Allow water to fill above pump suction and start the pump again to ensure it stops when

snoring. If it doesn’t stop adjust setting or expand window current.

Note: This settings is non-volatile. It is stored through power-cycles of the SC10.

Single Phase Motors. See also the note about single-phase motors in section 4.1 Snoring Detection Explained.

Modes

Setting

On: Disable Snore Stop

On: Disable Timer Start

Default = Off, Off.

Alarm Relay Activates for …

Setting

AIN (CT) Fault

Stop / Low Float

Start / High Float

Fail to Run (Low Current)

On = Activates for this condition.

Default= Off, Off, Off, Off

Stop / Low Float Invert

Setting

Off

Closed = Low (default)

Open = Low

5.7 Current Window Setting

See section 4.1 Snoring Detection Explained for an explanation of the

Current Window.

The current window setting has 4 dip switches +2%, +4%, +8% and +16%,

by selecting a current window it adds the percentage to the stop current

setpoint.

As an example if the stop current threshold is set to 20% of CT range and

the window current is set to +4% via dip switch 13 the stop current

threshold = 20% + 4% = 24 % of CT range.

Single Phase Motors. See also the note about single-phase motors in

section 4.1 Snoring Detection Explained.

5.8 Current Setpoint Adjustment

An additional adjustment method is by using the up () and down () buttons independently. By

pushing the up or down button it will adjust the stop current threshold to the user’s desired value as

a percentage of CT current.

Note: This settings is non-volatile. It is stored through power-cycles of the SC10.

6. Display and LED Indication

6.1 Current % Display

PA = PAUSING. Pump is Pausing.

CL = CLEANING. Pumps is Stopped for a Cleaning flush.

Number = the measured current as a percentage of the measured range. (Taking into account the Current Transformer range

configured using the DIP switches as per section 5.1.)

6.2 LED Indicators

See section 12 Reference for details of the LED indicators.

Current Window (%)

Setting

On: +16%

On: +8%

On: +4%

On: +2% (default)

7. Troubleshooting

Question / Problem

Answer

Pump Starts too early / often.

Level does not rise high enough before the

pump starts.

Increase the Pump Cycle Time. The

controller will wait longer before starting

the pump. See section 5.2.

Pump Starts too late.

Level does rises too high before the pump

starts.

Decrease the Pump Cycle Time. The

controller will not wait as long before

starting the pump. See section 5.2.

If you need the pump to start at a specific

level then consider using a High Level

(Float) Switch.

Current display percentage is always zero.

Lo Current LED is lit.

Ensure installed 4-20mA CT correctly

installed and connected to terminals 7 and

Ensure installed 4-20mA CT is correct range

for installed load.

The pump stops although it is not snoring.

Ensure the inhibit/low float input is not

activated

Stop current setpoint requires adjustment

as it is set too high. Adjust the stop current

setpoint to a lower value.

If using the Set functionality during

commissioning then adjust the Current

Window to a lower value.

The pump doesn’t stop when snoring.

Ensure the start/high float input is not

activated

The stop current setpoint is set too low.

Adjust the stop current setpoint to a higher

value.

If using the Set functionality during

commissioning then adjust the Current

Window to a higher value.

Power on but no lights are illuminated on unit.

Check power supply to unit across terminal

1 & 2.

Unit is faulty or damaged and requires

change out.

8. Specifications

Supply Voltage

24VAC, 12-24VDC

Frequency

45–65 Hz

Power Consumption

<10VA

Motor Current Sensor

4-20mA input CT. Range to suit attached load. SC10 provides

24VDC drive for CT.

Operating Temp

0-55 degrees Celsius

Run Relay Contact Rating

5 A, 48 VAC Resistive, 1.5 A 48 VAC Pilot duty / AC12

Alarm Contact Rating

5 A, 48 VAC Resistive, 1.5 A 48 VAC Pilot duty / AC12

Dimensions

W 106.5mm x H 90.50 mm x D 59mm

Material

PC/ABS

Mounting

35mm Din rail mounted

Weight

300 g

Certification

EN 61000-6-3:2007+A1+AC

FCC Part 15B

90.5mm

9. SC10 Connections

See section 12 Reference for terminal identification.

Figure 1 –SC10 Front Panel

Figure 2 - Connections

10. Pump starter wiring example

Pump

EOL

F1-6A

F2-6A

415VAC/24VAC

250VA

Power On

Overload Fault

O/L 1

O/L Panel Reset

Main Contactor

Alarm

CT 4-20mA +

CT 4-20mA -

1 2

8 9

Stop Button Low Level Overload

High Level

Panel Start

Remote Start

Start Inputs

Stop Inputs

Overload Reset

Remote Set Point Up

Remote Set Point Down

Remote Threshold Set

DIN Common

O/L 2

Emergency Stop

K1 Pump Run

DIN 1

DIN 2

DIN 3

DIN 4

DIN 5

+ 4-20mA

- 4-20mA

24 VAC-A 24 VAC-N

Ref -Line 8 Ref - Line 7

Ref – Line 23

Ref – Line

24 VAC - A 24 VAC - N

24 VAC

- N

24 VAC

- A

SC-10 Supply

SC-10

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