Motor phase and temperature control relay - 35 mm HWTM Part number 84873027
Control of 3-phase networks : phase sequence, phase failure
Multi-voltage
True RMS measurement
Motor temperature control via PTC probes
With line break or probe short-circuit detection
Version with fault latching function and reset / test
LED status indication
Part numbers
Type
84873027
Functions
Nominal voltage (V)
24 →240 V AC/DC
Phase control voltage range
3 x 208 →3 x 480 V AC
HWTM Phase sequence, phase failure, motor temperature via PTC probe, test, memory
Specifications
Supply
Supply voltage Un
Voltage supply tolerance
Operating range
Polarity with DC voltage
AC supply voltage frequency
Galvanic isolation of power supply/measurement
Power consumption at Un
Immunity from micro power cuts
24 V →240 V AC/DC
-15 % / +10 %
20,4 V →264 V AC/DC
No
50 / 60 Hz ± 10 %
No (current limiting)
4 VA in AC/0.5 W in DC
20 ms / 20,4 V
Inputs and measuring circuit
3-phase control
Measurement ranges
Operating range
Frequency of measured signal
Input resistance
3 x 208 →3 x 480 VAC *
176 →528 VAC
50 / 60 Hz ±10 %
602 KΩ / line
Contrôle thermique
Maximum voltage of heat detection circuit
Short-circuit current
Maximum heat detector resistance at 20 °C
Trip threshold
Reset threshold
Short-circuit detection range
Resistance measurement temperature drift
Repetition accuracy with constant parameters
3.6 V (T1-T2 open)
7 mA (T1, T2 short-circuited)
1500
Ω
3100
Ω±
10 %
1650
Ω±
10 %
0 →15 Ω±
5
Ω
± 0,1 % / °C max.
± 0,5 %
Timing
Delay on thresold crossing
Y1 input response time (Y1-T1 contact) and PB
Reset time
Delay on pick-up
300 ms max. (phase)
300 ms typical (temperature)
typically 50 ms
10 s max. at 264 V AC
500 ms
Output
Type of output
Type of contacts
Maximum breaking voltage
Max. breaking current
Min. breaking current
Electrical life (number of operations)
Breaking capacity (resistive)
Maximum rate
Operating categories acc. to IEC/EN 60947-5-1
Mechanical life (operations)
2 NO relays
No cadmium
250 V AC/DC
5 A AC/DC
10 mA / 5 V AC/DC
1 x 10
4
1250 VA AC
360 operations/hour at full load
AC12, AC13, AC14, AC15, DC12, DC13, DC14
30 x 10
6
Insulation
Nominal insulation voltage IEC/EN 60664-1
Insulation coordination (IEC/EN 60664-1)
Rated impulse withstand voltage (IEC/EN 60664-1)
Dielectric strength (IEC/EN 60664-1)
400 V
Overvoltage category III : degree of pollution 3
4 kV (1,2 / 50
μs)
2 kV AC 50 Hz 1 min.
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014
Insulation resistance (IEC/EN 60664-1)
> 500 MΩ / 500 V DC
www.crouzet.com
Yellow LED
Yellow LED
Green LED
35 mm
On 35 mm symmetrical DIN rail, IEC/EN 60715
All positions
Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11
Terminal block : IP20
Casing : IP30
107.1 g
Rigid : 1 x 4
2
- 2 x 2.5
2
mm
2
1 x 11 AWG - 2 x 14 AWG
Flexible with ferrules : 1 x 2.5
2
- 2 x 1.5
2
mm
2
1 x 14 AWG - 2 x 16 AWG
0,6 →1 Nm / 5,3 →8,8 Lbf.In
-20 →+50 °C
-40 →+70 °C
2 x 24 hr cycle 95 % RH max. without condensation 55 °C
10 →150 Hz, A = 0.035 mm
5g
General characteristics
"Phase" relay status indication
"Temperature" relay status indication
Display power supply
Casing
Mounting
Mounting position
Material : enclosure plastic type VO to UL94 standard
Protection (IEC/EN 60529)
Weight
Connecting capacity IEC/EN 60947-1
Max. tightening torques IEC/EN 60947-1
Operating temperature IEC/EN 60068-2
Storage temperature IEC/EN 60068-2
Humidity IEC/EN 60068-2-30
Vibrations according to IEC/EN60068-2-6
Shocks IEC/EN 60068-2-6
Standards
Marking
Product standard
Electromagnetic compatibility
CE (LVD) 73/23/EEC - EMC 89/336/EEC
NF EN 60255-6 / IEC 60255-6 / CEI 60034-11-2 / UL 508 / CSA C22.2 N°14
Immunity EN 61000-6-2/IEC 61000-6-2
Emission EN 61000-6-4/EN 61000-6-3
IEC 61000-6-4/IEC 61000-6-3
Emission EN 55022 class B
UL, CSA, GL
RoHS, WEEE
Certifications
Conformity with environmental directives
Comments
Accessories
Description
Removable sealable cover for 35 mm casing
Code
84800001
Principles
Overview
Relays HWTM and HWTM2 check the availability of the 3-phase network and the temperature of the motors using integrated PTC probes.
The "phase" and "temperature" control functions are independent of one another.
The 3-phase (208 to 480 V) network control verifies the sequence of phases L1, L2, L3 and their presence :
- the complete failure of a phase is detected, also in the event of regeneration (U measured < 0.7 x Un).
The result of the check is indicated by the status of the "phase" output relay. NO contact 21-24 will be open in case of fault.
The temperature control accepts up to 6 PTC probes (positive temperature coefficient resistor) wired in series between terminals T1 and T2.
A fault is reported if the resistance of the thermal detector circuit exceeds 3100
Ω.
Return to normal is verified when the resistance falls below 1650
Ω.
The result of the check is indicated by the status of the "temperature" output relay. NO contact 11-14 will be open in case of fault.
Opening of the thermal detector circuit has the same effect as high temperature (resistance exceeding 3100
Ω)
and is therefore interpreted as a fault.
Total short-circuit of the thermal probe (s), detected when resistance is less than 15
Ω±
5
Ω is
treated as a fault.
Principles
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014
www.crouzet.com
Control of 3-phase network
As soon as the phase sequence (L1 L2 L3) and phase amplitude symmetry (D < 30 %) are considered correct, the contact of the output relay closes and, subject to the result of the temperature
check, LED''R2''lights up.
In case of total failure or a drop in the amplitude of a phase (absence of phase with regeneration) or inversion of the phase sequence, the contact of the output relay opens and LED "R2" is
extinguished.
Temperature control without latching
As soon as it is verified that the resistance of the thermal detector is between 15 and 3,100Ω, the contact of the output relay closes and, subject to the result of the phase control check,
LED''R1''lights up.
If the resistance of the thermal detector circuit exceeds 3,100
Ω,
the output relay opens and LED "R1" is extinguished. After an overheating fault, the resistance must fall below 1,650
Ω for
the
output relay contact to reclose and, subject to the result of the phase check, LED "R1" to light up.
If the resistance falls below 15
Ω (short-circuit),
the output relay opens and LED "R1" is extinguished. As soon as it returns to between 15 and 3,100Ω, the contact of the output relay closes again
and, subject to the result of the phase control check, LED''R1''lights up.
N
o
Legend
Phase L1
Phase L2
Phase L3
Relay R2
30 % of Un
Principles
Control of 3-phase network
As soon as the phase sequence (L1 L2 L3) and phase amplitude symmetry (D < 30 %) are considered correct, the contact of the output relay closes and, subject to the result of the temperature
check, LED''R2''lights up.
In case of total failure or a drop in the amplitude of a phase (absence of phase with regeneration) or inversion of the phase sequence, the contact of the output relay opens and LED "R2" is
extinguished.
Temperature control without latching
As soon as it is verified that the resistance of the thermal detector is between 15 and 3,100Ω, the contact of the output relay closes and, subject to the result of the phase control check,
LED''R1''lights up.
If the resistance of the thermal detector circuit exceeds 3,100
Ω,
the output relay opens and LED "R1" is extinguished. After an overheating fault, the resistance must fall below 1,650
Ω for
the
output relay contact to reclose and, subject to the result of the phase check, LED "R1" to light up.
If the resistance falls below 15
Ω (short-circuit),
the output relay opens and LED "R1" is extinguished. As soon as it returns to between 15 and 3,100Ω, the contact of the output relay closes again
and, subject to the result of the phase control check, LED''R1''lights up.
N
o
Legend
Resistance between terminals T1 and T2
Relay R1
Dimensions (mm)
HWTM
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014
www.crouzet.com
Connections
HWTM
N
o
Legend
1 A fast-blow fuse or cut-out
Product adaptations
Customisable colours and labels
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
