SN0150 - Controller IFM - Free user manual and instructions

Product Type	Control unit for flow probes (VS3000)
Brand	IFM
Model	SN0150
Power supply	DC version: 24 V DC (SELV); AC version: 85-265 V AC
Main functions	Flow monitoring (liquid/gas), temperature monitoring, cable break/short-circuit detection
Outputs	3 output relays (switching for flow, cable, temperature); max voltage between circuits 300 V AC; max current 5 A (fuse protected)
LED indicators	Green LED (flow > threshold), yellow LED (relay activated), red LED (flow < threshold), red LED WIRE BREAK (cable fault), red LED TEMP (temperature too high)
Settings	Flow threshold potentiometer, temperature threshold potentiometer, shunt terminals 23/24 for gas, resistor between 22/23 for start-up delay
Mounting	On DIN rail (perpendicular), in IP20 electrical cabinet (pollution degree 2, overvoltage category II)
Connection	Pluggable Combicon terminals (supplied); accessories: spring terminal (E40171) or screw terminal (E40173)
Ambient temperature	Max +60 °C
Protection	IP20
Protection class	II (EN 61010)
Max probe cable length	100 m
Maintenance	No maintenance required under normal operation; check relay contacts periodically depending on use
Safety	Installation and wiring by an electrician; compliance with EMC and low-voltage standards; disconnect power before servicing
Repairability	Repair only by the manufacturer
Disposal	Environmentally friendly disposal according to national regulations
Documentation	User manual (25 pages) available in PDF at notice-facile.com

Frequently Asked Questions - SN0150 IFM

How to install the SN0150 unit?

Mount the unit on a DIN rail, perpendicularly, in an IP20 electrical cabinet. Ensure a cooling gap of at least 5 mm between devices. Installation must be carried out by an electrician.

What supply voltage for the SN0150?

Two versions exist: 24 V DC (SELV) or 85-265 V AC. The voltage is indicated on the unit label. For DC, the power supply must be protected by a max 2 A fuse.

How to connect the SFxxxx flow probes?

Follow the wire color code: white (WH2), blue (BU3), brown (BN1), black (BK4), gray (GY5). Max cable length: 100 m. The cable must be installed separately from the load cable to avoid interference.

How to set the flow threshold?

Set a constant flow, then turn the potentiometer (2) until the green LED lights up. The further the green LED is from the yellow LED, the more reliable the setting.

What does the red WIRE BREAK LED mean?

The red WIRE BREAK LED indicates a cable break or short circuit on the probe. The monitoring relay activates. After correcting the fault, the device is operational again.

How to select the monitored medium (liquid or gas)?

By default, the device is set for liquids. To monitor a gas, shunt terminals 23 and 24.

What is the default start-up delay and how to change it?

The start-up delay t1 is 10 seconds by default. To change it, connect a resistor between terminals 22 and 23 according to the table: e.g., 15 s with 10 kΩ, 80 s with 270 kΩ.

How to reset after a detected fault?

After correcting the cause of the fault (cable break, short circuit, or excessive temperature), the device automatically returns to normal operation. No manual reset is required.

Can I use the SN0150 for personnel safety applications?

No, the device is not approved for safety applications according to personnel protection. It is designed for flow and temperature monitoring in industrial installations.

Where to find the complete technical data for the SN0150?

Technical data and dimensional drawing are available at www.ifm.com by searching for reference SN0150 or by consulting the user manual.

USER MANUAL SN0150 IFM

Abstract geometric logo with stylized white lines and a circular background (no text or symbols)

CE

Betriebsanleitung

Operating instructions

Evaluation system for flow sensors

Notice utilisateurs

Pure geometric diagram of a polygonal shape with corner holes and internal lines (no text or symbols)

Inhalt

BN = braun, BU = blau, BK = schwarz, WH = weiß, GY = grau

DE

1 Preliminary note ....2
2 Safety instructions ....3
3 Function and features ....4
4 Mounting....4

4.1 Mounting of the sensors ....5

5 Electrical connection ....5

5.1 Terminal connection ....6
5.2 Power supply (Power) 6
5.3 Connection of sensors ....7
5.4 Relay outputs 7

6 Settings 7
7 Operation 8

7.1 Function diagram flow monitoring ....8

8 Maintenance, repair, disposal 9
9 Technical data and scale drawing ....9

1 Preliminary note

The operating instructions apply to all control monitors of type VS3000 for 35 mm DIN rail mounting. The only difference between the individual units is the type of supply voltage which is indicated on the type label of the unit. 2 versions are available: 24 V DC and 85 to 265 V AC.

The operating instructions are part of the unit. They contain information about the correct handling of the product. Read them before use to get familiar with operating conditions, mounting and operation. Adhere to the safety instructions. The operating instructions are made for authorised persons according to the EMC and low voltage guidelines.

2 Safety instructions

• Adhere to the operating instructions. Non-observance of the instructions, operation which is not in accordance with use as prescribed below, wrong installation or incorrect handling can affect the safety of operators and machinery.
• The unit must only be installed, connected and put into operation by a qualified electrician as during the installation dangerous voltages may be exposed. The safe function of the unit and the plant is only guaranteed when installation is correctly carried out.
• Disconnect the unit externally before handling it. Also disconnect any independently supplied relay load circuits.
• Be careful when handling the unit once power is applied. This is only allowed by qualified personnel due to the protection rating IP 20.
• The design of the unit corresponds to protection class II (EN 61010) except for the terminal blocks. Protection against accidental contact (safety from finger contact to IP20) for qualified personnel is only ensured if the terminals have been completely inserted. For this reason the unit must always be installed in a control cabinet which can only be opened with a tool, for pollution degree 2 and overvoltage category II.
• For DC units the external 24 V DC supply must be generated and supplied according to the requirements for safe extra-low voltage (SELV) since this voltage is provided near the operating elements and at the terminals for the supply of sensors without further protection measures.
• In case of malfunction of the unit or queries please contact the manufacturer. Any tampering with the device can seriously affect the safety of operators and machinery. This is not permitted and leads to an exclusion of liability and warranty.

3 Function and features

The evaluation system VS3000 is designed to work with flow sensors of the type SFxxxx. It evaluates the signals from the sensors and signals whether there is a preset flow rate or not:

• Flow above the preset value / output relay is energised.
• Flow below the preset value / output relay is de-energised.
• Flows of either liquids or gases can be monitored.
• Wire break monitoring: in the case of an open-circuit or short-circuit the monitoring relay is de-energised, the red LED (WIRE BREAK/RELAY) signals a fault.
• Temperature monitoring: relay is energised when temperature is exceeded, the red LED (TEMP/RELAY) signals a fault.

The unit is not approved for safety tasks in the field of safety of persons.

4 Mounting

• Install the unit in a control cabinet which can only be opened with a tool, for pollution degree 2 and overvoltage category II, to guarantee protection against accidental contact with dangerous contact voltages and against atmospheric influences. The control cabinet should be installed in accordance with local and national rules and regulations.
• Mount the unit on a DIN rail Once mounted leave enough space between the unit and the top and bottom of the control cabinet (to enable clear space for convection cooling).

When several units are mounted side by side the internal heating of all units has to be considered. The ambient temperature for the individual unit must not exceed the permissible value of +60^ C.

In this case adhere to the distances between the units. The following applies to identical VS3000 units: distance = at least 5 mm.

For units from other companies the permissible distance is to be determined by measurements.

- Prevent the penetration of conductive or other dirt into the housing or wiring.

4.1 Mounting of the sensors

Adhere to the mounting instructions of the manufacturer.

5 Electrical connection

The unit must only be connected by an electrician.

The national and international regulations for the installation of electrical equipment must be observed.

▶ Avoid contact with voltages.
▶ Disconnect the plant from power before wiring.

▶ Check if the relays are connected to voltages of external power supplies.

• In order to avoid malfunction caused by interference, lay the sensor cable separately from the load cable. Max. length of the sensor cable: 100m.

• Connection by means of Combicon connectors (fitted). Combicon connectors are also available as accessories:

• connector with cage clamps (order no. E40171),

• connector with screw terminals (order no. E40173).

5.1 Terminal connection

1: flow monitoring
2: wire break monitoring
3: temperature monitoring
4: power-on delay time
5: selection liquid / gas

Core colours for flow sensors of the type SFxxxx:

BN = brown, BU = blue, BK = black, WH = white, GY = grey

5.2 Power supply (Power)

Terminal 1: L (AC unit) / L+ (DC unit).

Terminal 2: N (AC unit) / L- (DC unit).

• For DC units the supply voltage must be protected externally (max. 2A).
• The terminals of the DC supply are directly linked with the terminals of the sensor supply. This is why the SELV criteria must be adhered to for DC supply (protective low voltage, circuit galvanically separated from other circuits, not earthed).
• If the DC circuit is to be earthed (e.g. because of national regulations), the PELV criteria have to be adhered to (protective low voltage, circuit galvanically separated from other circuits).

- If the unit is supplied with AC voltage, the low voltage supply for the sensors meets the SELV criteria.

5.3 Connection of sensors

Please also adhere to the SELV criteria for the sensor connection so that there is no dangerous contact voltage at the sensor which can enter the unit!

5.4 Relay outputs

The voltage between the different output circuits (terminals 4, 5, 6 – terminals 7, 8, 9 – terminals 10, 11, 12) must not exceed the permissible maximum value of 300 V AC.

Insert a miniature fuse according to IEC60127-2 Sheet 1 ( ≤ 5 A fast acting).

6 Settings

	1	Bank of LED's- red LED lit: flow below the switch point- yellow LED lit: relay is energised, flow has reached the switch point- green LED lit: flow above the switch point
	2	Potentiometer (switch point flow)
	3	Potentiometer (switch point temperature)
	4	Red LED (WIRE BREAK/RELAY): lights in case of wire break or short circuit of the sen-sor wires
	5	Red LED (TEMP/RELAY): lights if the set temperature is exceeded

1. Selection of the monitored medium:

Factory setting: Monitoring of liquids. For monitoring of gases: Link terminals 23 / 24.

1. Setting of the power-on delay time t1:

Factory setting: t1 = 10 s. To define other times: Connect an external resistor (R) between the terminals 22 and 23.

t1 [s]	15 20	25 30	35 40	45 50	55 60	65 70	75 80
R [kΩ]	10 18	27 39	47 56	68 82	100	120	150 180	220	270

1. Apply the operating voltage. After the power-on delay time has elapsed, the unit is ready for operation, (during this time the output relay for flow monitoring is energised).
2. Set the preset flow and keep it constant. Turn the setting potentiometer (2) until a green LED lights. The farther the green LED lit is away from the yellow LED, the safer is the adjustment (excess gain for flow or temperature fluctuations).
3. Set the setting potentiometer for the temperature monitoring (3) to the requested limit temperature.

7 Operation

After mounting, wiring and setting check whether the unit operates correctly.

For units with monitoring of the sensor cable: In the case of wire break or short circuit the relay „wire monitoring“ is de-energised and the red LED lights. After rectification of the fault the control monitor is again ready for operation.

7.1 Function diagram flow monitoring

A = preset flow; B = switch point; C = output relay

t1 = power-on delay time

8 Maintenance, repair, disposal

In case of correct use no maintenance measures are necessary.

Depending on the switching rate to be expected and the load to be switched, we recommend testing the relay contacts.

Only the manufacturer is allowed to repair the unit.

After use dispose of the unit in an environmentally friendly way according to the valid national regulations.

UK

9 Technical data and scale drawing

Technical data and scale drawing at www.ifm.com → Data sheet search → Enter the article number.

Contenu

BN = brun, BU = bleu, BK = noir, WH = blanc, GY = gris

5.2 Alimentation

Borne 1 : L (appareil AC) / L+ (appareil DC),

borne 2 : N (appareil AC) / L- (appareil DC).

FR