2iB SC10 User manual

SC10 Single Pump Controller
Installation and User Manual

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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.)

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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%.

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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
SW
1
2
Setting
Off
Off
100% (default)
Off
On
50%
On
Off
25%
On
On
12.5%
Pump Run Time Target
SW
3
4
5
Setting
Off
Off
Off
3 min
Off
Off
On
5 min (default)
Off
On
Off
8 min
Off
On
On
15 min
On
Off
Off
30 min
On
Off
On
1 h
On
On
Off
2 h
On
On
On
4 h

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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
SW
Setting
15
On: Disable Snore Stop
16
On: Disable Timer Start
Default = Off, Off.
Alarm Relay Activates for …
SW
Setting
6
AIN (CT) Fault
7
Stop / Low Float
8
Start / High Float
9
Fail to Run (Low Current)
On = Activates for this condition.
Default= Off, Off, Off, Off
Stop / Low Float Invert
SW
10
Setting
Off
Closed = Low (default)
On
Open = Low

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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 (%)
SW
Setting
11
On: +16%
12
On: +8%
13
On: +4%
14
On: +2% (default)

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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
9.
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.

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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

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9. SC10 Connections
See section 12 Reference for terminal identification.
Figure 1 –SC10 Front Panel
Figure 2 - Connections

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10. Pump starter wiring example
Pump
EOL
CB
CT
K1
F1-6A
F2-6A
415VAC/24VAC
250VA
CB
Power On
Overload Fault
O/L 1
O/L Panel Reset
K1
Main Contactor
Alarm
CT 4-20mA +
CT 4-20mA -
1 2
4
3
8 9
10
11
12
13
14
15
Stop Button Low Level Overload
High Level
Panel Start
Remote Start
Start Inputs
Stop Inputs
5
Overload Reset
Remote Set Point Up
Remote Set Point Down
Remote Threshold Set
DIN Common
O/L 2
Emergency Stop
2
3
4
5
6
7
8
9
10
11
K1 Pump Run
DIN 1
DIN 2
DIN 3
DIN 4
DIN 5
+ 4-20mA
- 4-20mA
1
6
12
13
14
15
16
17
18
19
20
21
24 VAC-A 24 VAC-N
22
23
24
25
26
27
28
29
31
32
33
34
35
36
37
38
Ref -Line 8 Ref - Line 7
Ref – Line 23
OL
Ref – Line
11
24 VAC - A 24 VAC - N
24 VAC
- N
24 VAC
- A
SC-10 Supply
SC-10
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