Crouzet 84870700, 84870710 Data Sheet

Level control
HNM HNE
Part numbers
Product adaptations
Accessories
General characteristics
Level control relay - 35 mm
Control of one or two levels
Filling or emptying function
HNM: Control by a resistive level probe
HNE: Control by a discrete sensor
Sensing By resistive probes By discrete sensors Nominal voltage (V)
Part numbers 84870700 84870710
240 V
z
24 240 V
24
z
Customisable colours and labels
Fixed or adjustable time delay
Adaptation dedicated to HNM:
Fixed threshold in the generic measurement range
Description Code
Removable sealable cover for 35 mm casing 84800001
Supply
Power consumption at Un Immunity from micro power cuts (ms)
Output
Type of output 1 double changeover
Timing
Maximum reset time 4 s 1.7 s
Inputs and measuring cicuit
Measurement range 250 1 MΩ - Low sensitivity adjustment gamme LS 250 Standard sensitivity adjustment gamme St 5 k High sensitivity adjustment gamme HS 50 k Adjustment of sensitivity 5
Display precision ± 10% of full scale for LS
Measuring error with temperature drift 0.5% / °C in standard
Measuring error with voltage drift 0%/V across the whole
Max. voltage at probe terminals 5 V / 500 Hz ± 10% 12 V Max. current via probes < 1 mA 40 mA Max. length of probe cables 100 m ­Max. capacity of probe cable (nF) 1 nF for HS range
Input circuit 3-wire sensors No
General characteristics
Weight 115 g 110 g
a
5 VA in 90 max. in
max. en
relay
100% of the selected
range
and St ranges
-40% / +10% of full scale for HS ran ge
sensitivity
range
2.2 nF for St range
4.7 nF for LS range
/1.5 W in
a
c
5 k -
100 k -
1 M -
c
et 100
5 VA in a/2.7 W in 50
1 single pole changeover relay
-
±10% of full scale
0.5% / °C in standard sensitivity
0%/V across the whole range
c
50
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General characteristics
HNM / HNE
Supply
Supply voltage Un
24 V Voltage supply tolerance -15% / +10% Operating range
20.4
Polarity with DC voltage No
a
supply voltage frequency
Galvanic isolation of power supply/measurement
50/60 Hz ± 10%
Timing
Delay on threshold crossing 0.1
5 s (0, + 10%)
Repetition accuracy with constant parameters ± 2% Delay on pick-up 600 ms
Output
Type of contacts No cadmium Maximum breaking voltage
Max. breaking current Min. breaking current Electrical life (number of operations) Breaking capacity (resistive)
250 V
z
5 A
10 mA / 5 V
1 x 10
1 250 VA Maximum rate 360 operations/hour at full load Operating categories acc. to IEC 60947-5-1 AC12, AC 13, AC 14, AC 15, DC 12, DC 13 Mechanical life (operations)
30 x 10
Insulation
Nominal insulation voltage IEC 60664-1 250 V Insulation coordination (IEC 60664-1 / 60255-5) Overvoltage category III: degree of pollution 3 Rated impulse withstand voltage IEC 60664-1/60255-5 4 KV (1.2 / 50 µs) Dielectric strength IEC 60664-1/60255-5 2 KV AC 50 Hz 1 min. Insulation resistance IEC 60664-1 / 60255-5
> 500 M / 500 V
General characteristics
Display power supply Green LED Display relay Yellow LED Delay Yellow LED Casing 35 mm Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715 Mounting position All positions Material: enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11 Protection (IEC 60529) Terminal block: IP20
Connecting capacity IEC 60947-1
Max. tightening torques IEC 60947-1 0.6 Operating temperature IEC 60068-2 -20 Storage temperature IEC 60068-2 -40
Casing: IP30
Rigid: 1 x 4
1 x 11 AWG - 2 x 14 AWG
Flexible with ferrules: 1 x 2.5
1 x 14 AWG - 2 x 16 AWG
1 Nm / 5.3 ➞ 8.8 Lbf.In+50°C+70°C
Humidity IEC 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55°C Vibrations according to IEC/EN60068-2-6 10
150 Hz, A = 0.035 mm
Shocks IEC 60068-2-6 5 g
Standards
Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC Product standard NF EN 60255-6 / IEC 60255-6 / UL 508 / CSA C22.2 N°14 Electromagnetic compatibility Immunity EN 61000-6-2/IEC 61000-6-2
Certifications UL, CSA, GL
Emission EN 61000-6-4 2002/EN 61000-6-3
IEC 61000-6-4/IEC 61000-6-3
Emission EN 55022 class A
pending Conformity with environmental directives RoHS, WEEE
240 V
264 V
z
5
a
6
2
z
z
c
c
- 2 x 2.52 mm2
2
- 2 x 1.52 mm
2
51
HNM-HNE
Level control
Principles
U
1
2
3
4
Overview
HNM and HNE control relays are designed to monitor the levels of:
- Conductive liquid (HNM)
- Any other product (HNE) The HNM relay takes its measurements by means of resistive probes. The HNE relay takes its measurements by means of discrete sensors. Both these products actuate their output relay during emptying or filling of a tank.
General principle:
HNM relays control levels of conductive liquids. The principle is based on measuring the apparent resistance of the liquid between two submerged probes. When this value is below the preset threshold displayed on the front face of the unit, the relay changes state. To avoid electrolytic phenomena, an AC current runs across the probes. A rotary switch on the front face can be used to select the desired function and sensitivity range.
HNE relays control levels of products which may or may not be conductive. High and low-level data is produced by 3-wire output discrete sensors.
A green LED indicates the presence of the supply voltage. A yellow LED indicates the status of the output relay. A yellow LED flashes during the time delay.
Parameter setting:
A rotary switch on the front face can be used to select the sensitivity range, and the emptying or filling function. A second switch can be used to select the number of levels (1 or 2), as well as the type of time delay in the case of 1-level mode. The configuration of these switches is taken into account on energisation. If the switch is set to a non-conforming position on energisation, the product goes into fault mode, the output relay stays open and the LEDs flash to signal the position error. If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the function selected on energisation prior to the change of position. The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation.
HNM-HNE - Emptying/filling function - two levels
Control of two levels, emptying function
(Level: 2, LS emptying function (Low sensitivity: 250 to 5 k), St emptying (Standard sensitivity: 5 k to 100 k), HS emptying (High sensitivity: 50 k to 1 MΩ ). As long as the liquid level has not reached the probe maximum, the output relay stays open. Once the max. level is reached, the contact closes, thus allowing the tank to empty (valve opens, pump starts, etc). When the level drops below the min. level, the contact opens to interrupt the emptying process.
NB: In two-level control mode the time delay for preventing wave effect is not active.
Control of two levels, filling function
Maximum level
B
Minimum level
C
Output relay R filling function "Up"
D
Output relay R emptying function "Down"
E
(Level: 2, LS filling function (Low sensitivity: 250 to 5 k), St filling (Standard sensitivity: 5 k to 100 k), HS filling (High sensitivity: 50 k to 1 MΩ ). As long as the liquid level has not reached the probe maximum, the output relay stays closed. Once the max. level is reached, the contact opens and pumping stops. When the level drops below the min. level, the contact closes again and pumping restarts so as to make the liquid level rise again.
NB: In two-level control mode the time delay for preventing wave effect is not active.
HNM-HNE - One-level filling function/on-delay
U
1
2
Min. probe level
B
R output relay
C
HNM-HNE - One-level filling function/off-delay
U
1
2
Min. probe level sonde Min
B
R output relay
C
52
Tt Tt Tt Tt
Tt
Tt
Tt
One-level control (min. probe), filling function, on-delay
(Level: 1 - on-delay, LS filling function (Low sensitivity: 250 to 5 k), St filling (Standard sensitivity: 5 k to 100 k), HS filling (High sensitivity: 50 k to 1 MΩ ).
When the liquid level drops below the probe for a duration longer than the value of time delay Tt set on the front face, the relay closes and stays closed until the liquid level reaches the probe again. If the liquid level rises back above the level set before the end of the time delay, the relay does not close.
One-level control (min. probe), filling function, off-delay
(Level: 1 - off-delay, LS filling function (Low sensitivity: 250 to 5 k) or St filling (Standard sensitivity: 5 k to 100 k) or HS filling (High sensitivity: 50 k to 1 MΩ ). When the liquid level drops below the probe for a duration longer than the value of time delay Tt set on the front face, the relay closes instantly and stays closed until the liquid level reaches the probe again and stays above it for a duration longer than time delay Tt set on the front face.
Tt
If the liquid level drops back below the level set before the end of the time delay, the relay stays closed.
Principles
HNM-HNE - One-level emptying function/on-delay
U
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One-level control (min. probe), emptying function, on-delay
(Level: 1 - on-delay, LS emptying function (Low sensitivity: 250 to 5 kW), St emptying (Standard sensitivity: 5 k to 100 k), HS emptying (High sensitivity: 50 k to 1 MΩ ).
1
Tt Tt Tt Tt
2
Min. probe level
B
R output relay
C
HNM-HNE - One-level emptying function/off-delay
U
1
Tt
Tt
Tt
Tt
2
Min. probe level
B
R output relay
C
Dimensions (mm)
HNM-HNE
60
44
23,2
3,5
When the liquid level rises above the probe for a duration longer than the value of time delay Tt set on the front face, the relay closes and stays closed until the liquid level drops back below the probe. If the liquid level drops back below the level set before the end of the time delay, the relay does not close.
One-level control (min. probe), emptying function, off-delay
(Level: 1 - off-delay, LS emptying function (Low sensitivity: 250 to 5 k), St emptying (Standard sensitivity: 5 k to 100 k), HS emptying (High sensitivity: 50 k to 1 MΩ ).
When the liquid level rises above the probe, the relay closes instantly and stays closed until the liquid level drops back below the probe for a duration longer than the value of time delay Tt set on the front face. If the liquid level rises back above the level set before the end of the time delay, the relay stays closed.
35
67,5
45
90
2,6
5,5
Connections
HNM HNE
L1
L2
L3
N
S
F1
1
l 100 m (3937 in)
V1
U1
W1
M1 3
1 A fast-blow fuse or cut-out
B
Common
C
NB: Probe cable: screened cable recommended, screening and "common" connected to earth. The probe cable does not have to be screened, but it is inadvisable to mount it close to the power cables. For mono level, use the "com" and "min." electrodes.
A1 A2 CMin Max
11
A1
A2
12
14
1112 14
22 21 24
Max
21
Min
24
22
2
L1
L2
L3
N
A1 A2
A1
A2
l 100 m (3937 in)
0VMin Max12V 12V
11
12
14
1112 14
Tor
Tor
Max
Min
S
V1
U1
W1
M1 3
1 A fast-blow fuse or cut-out
B
F1
1
NB: Probe cable: screened cable recommended, screening and "common" connected to earth. The probe cable does not have to be screened, but it is inadvisable to mount it close to the power cables. For mono level, use the "com" and "min." electrodes.
53
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