Float switch with two switching contacts, two programmable switching outputs for temperature, alternatively one programmable switching output and one analog output with display and control unit ABZMS-40

Description

Product description

Float switches are switching devices operated by a float moved by fluid. They serve the control of filling levels in power unit tanks. The ABZMS-40 float switches sense fluid levels in tanks of the small power units Type ABSKG… size 20, 40 and 60. The float switches have to pre-set switching contacts for level and two programmable switching outputs for temperature.

Alternative:

Float switch with two pre-set switching contacts for level, one programmable switching output for temperature and one analog output 4 … 20 mA.

Function level contacts

If with falling oil level, the float reaches the switching points, the contacts are operated magnetically. The spool positions of the contacts are maintained until the float exceeds the switching points again as the oil level rises. Switching point L1 is set as contact function normally closed contact at min. and switching point L2 as contact function normally open contact at max. level.

Function display and control unit

The microprocessor-controlled display and control unit processes the analog input signal for the analysis of the temperature control. The temperature settings can be made at the control unit in a simple menu tree by means of pushbuttons and read at the LED display.

The display and control unit has a red, four-digit seven-segment LED display and 3 pushbuttons for the operation as well as up to 4 LEDs integrated in the front plate for displaying alarm conditions.

The device has moreover two freely adjustable PNP switching outputs plus the adjustable switch-back points. One PNP output can be programmed as frequency output. Alternatively one freely programmable PNP switching output and one 4...20 mA output for the continuous temperature measurement. The switching conditions are shown in the display.

The 4...20 mA output can optionally be changed to 0 … 10 V, 2 … 10 V or 0 … 5 V.

In the display, the desired unit (°C, °F) will be shown according to the setting of the measured temperature. By default, the temperature display is set to °C.

During the setting and/or programming of the corresponding process parameters, the parameter values and/or the related menu items will be shown in the display.

In case of an energy supply failure, all input values will be stored, the min/max values can be retrieved from a permanent memory, if necessary.

Parameterization

The menu navigation is based on the VDMA standard sheet for fluid sensors 24574-1.

The operating menu is designed hierarchically, as tree structure.

That means that frequently used functions and adjustment points can be accessed very quickly and rarely used menu items can be found in a sub-menu.

Using the ▲ and ▼ keys, the corresponding parameter is set and/or the next menu item is displayed.

Using the ► key, the marked menu item is selected and/or the set parameter is accepted and saved.

The parameter may be a numerical value and a selection of functions (e.g. NO [output as normally open contact], NC [output as normally closed contact] or i1 [analog output 4 … 20 mA]).

After confirmation of a parameter or selection of a function using the ► key, the display switches back to the current menu item. Then, you can display the next menu item using ▲ and ▼ and select it using ►.

Type code

Ordering code

1) Mating connectors, separate order (see R.08006)

2) Pinout, see "Electrical connections"

Order example:

– Float switch with connection thread M20 x 1.5 with two preset switching contacts.

– Switching point L1 = 120 mm normally closed contact.

– Switching point L2 = 50 mm normally open contact.

– Temperature display and two programmable switching outputs.

– Connector K24.

ABZMS-40-1X/120F050S-T2-K24, Material no. R901245523

Technical data

Resistance

electrical

Reed contacts of the float switches
with connection K24 for mating connector M12 x 1; 4-pole

Display and control unit

Version T2

Version T1A

Assignment to reservoirs

Float switches with min./max. switching points

Tank size DN20	Tank size DN40 and 60 Dimensions in mm

Float switches with min. early warning switching points

Tank size DN20	Tank size DN40 and 60 Dimensions in mm

Symbols/Circuit diagrams

Two pre-set level contacts and two programmable temperature switching outputs

Two pre-set level contacts and one programmable temperature switching output and one analog output 4 … 20 mA

Electrical connection

Pinout

Switching function plug-in connection M12 x 1

Version	T2
	T1A

Dimensions

Dimensions in mm

Mounting

Assembly information

• Vertical installation according to "Technical data"

• Avoid flows

• Do not expose the switch to strong impact and bends

• Avoid external magnetic fields. They may impair the function of the reed contacts.

Electrical connections:

• Electrical connections may only be performed by specialists.

• Tighten round connector M12 x 1 after connection

• Only plug in the round connector M12 x 1 if it is de-energized

• Do not overload the contacts (see "Technical data")

• Tightening torque of the screwed plug 25 Nm

• In case of inductive load, provide for a protective circuit!

Information

Normative references

R.08006

Mating connectors for controlling electrically operated valves and sensors

R.51013

Modular standard power units

DIN 24320

Flame-resistant fluids - Hydraulic fluids of categories HFAE and HFAS – Properties and requirements

DIN 51524

Hydraulic fluids; hydraulic oils

DIN EN 60751

Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751:2008)

DIN EN 60529

Degrees of protection provided by enclosures

VDMA 24317

Fluid technology – Flame-resistant fluids – Technical minimum requirements

VDMA 24568

Fluid technology – Fast biodegradable hydraulic fluids – Technical minimum requirements

VDMA 24574-1

Fluid technology – Terms, menu navigation and electrical connection for fluid sensors

Accessories

Mating connectors

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

• For sensors and valves with connector “K24”, “K35” and “K72”
• Mating connectors M12, 4-pole, line cross-section 0.75 mm2

• Data sheet

• Spare parts and repair

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1, with assembled connection line

4P Z24 +

• For sensors and valves with connector “K24”, “K35” and “K72”
• Mating connectors M12, 4-pole, line cross-section 0.75 mm2

• Data sheet

• Spare parts and repair

Safety Instructions

Use in explosive areas according to directive 94/9/EC (ATEX)

The float switches according to ABZMS-40 are not suitable for the use in explosive areas.

Downloads

	Float switch with two switching contacts, two programmable switching outputs for temperature, alternatively one programmable switching output and one analog output with display and control unit Data Sheet | RE50220 | 2010-07-01 | English | PDF | 379k Product Groups: Power units Type ABZMS-40
	Float switch for tank installation, Type ABZMS-40 Manual | RE50220-B | 2010-04-30 | English | PDF | 6MB Product Groups: Power units