HWTM2

KEY FEATURES

  • 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 (HWTM2)
  • LED status indication
FunctionsNominal voltage (V)Phase control voltage rangeCode
Phase sequence, phase failure, motor temperature via PTC probe, test, memory24 →240 V ∿/⎓3 x 208 →3 x 480 V ∿84873028

Specifications


Supply voltage Un 24 V →240 V ∿/⎓
Voltage supply tolerance -15 % / +10 %
Operating range 20,4 V →264 V ∿/⎓
Polarity with ⎓ voltage No
∿ supply voltage frequency 50 / 60 Hz ± 10 %
Galvanic isolation of power supply/measurement No (current limiting)
Power consumption at Un 4 VA in ∿/0.5 W in ⎓
Immunity from micro power cuts 20 ms / 20,4 V

Measurement ranges 3 x 208 →3 x 480 V∿ *
Operating range 176 →528 V∿
Frequency of measured signal 50 / 60 Hz ±10 %
Input resistance 602 KΩ / line
Maximum voltage of heat detection circuit 3.6 V (T1-T2 open)
Short-circuit current 7 mA (T1, T2 short-circuited)
Maximum heat detector resistance at 20 °C 1500 Ω
Trip threshold 3100 Ω ± 10 %
Reset threshold 1650 Ω ± 10 %
Short-circuit detection range 0 →15 Ω ± 5 Ω
Resistance measurement temperature drift ±  0,1 % /  °C max.
Repetition accuracy with constant parameters ± 0,5 %

Delay on thresold crossing 300 ms max. (phase) 300 ms typical (temperature)
Y1 input response time (Y1-T1 contact) and PB typically 50 ms
Reset time 10 s max. at 264 V ∿
Delay on pick-up 500 ms

Type of output 2 NO relays
Type of contacts No cadmium
Maximum breaking voltage 250 V ∿/⎓
Max. breaking current 5 A ∿/⎓
Min. breaking current 10 mA / 5 V ∿/⎓
Electrical life (number of operations) 1 x 104
Breaking capacity (resistive) 1250 VA ∿
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC/EN 60947-5-1 AC12, AC13, AC14, AC15, DC12, DC13, DC14
Mechanical life (operations) 30 x 106

Nominal insulation voltage IEC/EN 60664-1 400 V
Insulation coordination (IEC/EN 60664-1) Overvoltage category III : degree of pollution 3
Rated impulse withstand voltage (IEC/EN 60664-1) 4 kV (1,2 / 50 μs)
Dielectric strength (IEC/EN 60664-1) 2 kV AC 50 Hz 1 min.
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 500 V ⎓

"Phase" relay status indication Yellow LED
"Temperature" relay status indication Yellow LED
Display power supply Green 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/EN 60529) Terminal block : IP20 Casing : IP30
Weight 107.1 g
Connecting capacity IEC/EN 60947-1 Rigid : 1 x 42 - 2 x 2.52 mm2 1 x 11 AWG - 2 x 14 AWG Flexible with ferrules : 1 x 2.52 - 2 x 1.52 mm2 1 x 14 AWG - 2 x 16 AWG
Max. tightening torques IEC/EN 60947-1 0,6 →1 Nm / 5,3 →8,8 Lbf.In
Operating temperature IEC/EN 60068-2 -20 →+50 °C
Storage temperature IEC/EN 60068-2 -40 →+70 °C
Humidity IEC/EN 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/EN 60068-2-6 5 g

Product standard IEC/EN 50178
Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4
Certifications CE, UL, CSA, GL
Conformity with environmental directives RoHS

* 3-phase mains with earth

Technical sketches

HWTM2 - Phase failure and phase sequence

HWTM2 - Phase failure and phase sequence
Legend
1-
Phase L1
2-
Phase L2
3-
Phase L3
4-
Relay R2
5-
30 % of Un
The configuration is taken into account on energisation of the relay HWTM2. Selecting the operating mode :   Using the selector switch, select one of two modes :   - Thermal control without latching, - Thermal control with latching.  : On energisation, the switch placed in one of the five intermediate positions keeps the relays in the open contact state and the error is signalled by the LEDs flashing simultaneously. The mode selector switch position is taken into account on energisation. Changes made during operation have no effect :   the active configuration may therefore be different from that indicated by the switch ; relay HWTM2 operates normally but the change in configuration is signalled by both LEDs flashing simultaneously.

HWTM2 with latching

HWTM2 with latching
Legend
1-
Test / Reset
2-
Resistance between terminals T1 and T2
3-
Relay R1
Version HWTM2 has a rotary switch for configuring the operating mode of the temperature control with or without latching. In "memory" mode, when a fault has been recorded, the "temperature" relay latches in the open position. Once the temperature is correct again, the relay can be unlatched (reset) either by pressing the "Test/Reset" button (for at least 50 ms), or by closing a volt-free contact (for at least 50 ms) between terminal Y1 and T1 (without load in parallel). Relay HWTM2 can also be reset more abruptly by switching off and on again several times in succession (see reset time).

HWTM2 without latching

HWTM2 without latching
Legend
1-
Resistance between terminals T1 and T2
2-
Relay R1
The HWTM2 version has a rotary switch which can be used to configure the temperature control operating mode with or without latching. In "memory" mode, when a fault has been recorded, the''temperature''relay latches in the open position. Once the temperature has returned to a correct value, the relay can be unlatched (reset), either by pressing the "Test/Reset" pushbutton (50 ms minimum), or by closing (50 ms minimum) a volt-free contact between terminals Y1 and T1 (without parallel load). The HWTM2 can also be reset, more abruptly, by switching it off and on again several times in succession (see reset time).

HWTM2 Test/Reset without latching

HWTM2 Test/Reset without latching
Legend
1-
Test / Reset
2-
Resistance between terminals T1 and T2
3-
Relay R1
Version HWTM2 has a "test/reset" button for checking the operating state of the temperature control :   When the temperature is normal, pressing the "test/reset" button simulates overheating, the yellow LED is extinguished and the contact of the "temperature" output relay opens ;   if "memory" mode is active, the fault indication is latched (the button must be released for at least 50 ms, then pressed again to reset the function).

HWTM2 Test/Reset with latching

HWTM2 Test/Reset with latching
Legend
1-
Test / Reset
2-
Resistance between terminals T1 and T2
3-
Relay R1
Version HWTM2 has a "test/reset" button for checking the operating state of the temperature control and resetting it after latching in "memory" mode. For both functions, the button must be pressed and released for 50 ms. When the temperature is normal, pressing the "test/reset" button simulates overheating, the contact of the "temperature" output relay opens and the "no fault" LED is extinguished. If "memory" mode is inactive, the "fault" indication is maintained as long as the button is pressed. If "memory" mode is active, the "fault" indication is latched. The button must be released, then pressed again to reset the function. In "memory" mode, if a fault has been detected and the temperature is now correct again, the "temperature" relay can be unlatched (reset) with the "test/reset" button'. As long as the temperature is abnormal, i.e. as long as the resistance of the thermal detector circuit is greater than 3,100 Ω or, having exceeded  3,100 Ω it has not fallen back to below  1,650 Ω, pressing the "test/reset" button has no effect.

HWTM2

HWTM2

HWTM2

HWTM2
Legend
1-
1 A fast-blow fuse or cut-out
PH RMC2 HWUA

Share
Share
felis non elit. pulvinar eget mi,