99 Series - Coil indication and EMC suppression modules 99.01 99.02 99.80 Sockets Relays Sockets Relays Sockets Relays 90.02 60.12 94.54.1 55.32, 55.34 90.20 60.12 90.03 60.13 94.82.3 55.32 90.21 60.13 92.03 62.32, 62.33 94.84.3 55.32, 55.34 94.72 55.32 94.02 55.32 84.84.2 55.32, 55.34 94.73 55.33 94.03 55.33 94.92.3 55.32 94.74 55.32, 55.34 94.04 55.32, 55.34 94.94.3 55.32, 55.34 94.82 55.32 95.63 40.31/41.31 95.03 40.31 95.55.3 40.51/52/61 95.65 40.51/52/61 95.05 40.51/52/61 44.52, 44.62 41.52/61 44.52, 44.62 95.83.3 40.31 44.52/62 95.55 40.51/52/61 95.85.3 40.51/52/61 44.52, 44.62 44.52/62 96.72 56.32 96.02 56.32 95.93.3 40.31 96.74 56.34 96.04 56.34 95.95.3 40.51/52/61 97.01/97.51 46.61 44.52, 44.62 97.02/97.52 46.62 FUNCTION / OPERATING RANGE CODE CODE CODE Green LED + diode module (standard polarity) 6 - 24 V DC 99.01.9.024.99 99.02.9.024.99 99.80.9.024.99 28 - 60 V DC 99.01.9.060.99 99.02.9.060.99 99.80.9.060.99 110 - 220 V DC 99.01.9.220.99 99.02.9.220.99 99.80.9.220.99 Green LED + diode module (non-standard polarity) 6 - 24 V DC 99.01.9.024.79 99.02.9.024.79 99.80.9.024.79 28 - 60 V DC 99.01.9.060.79 99.02.9.060.79 99.80.9.060.79 110 - 220 V DC 99.01.9.220.79 99.02.9.220.79 99.80.9.220.79 Green LED + Varistor module 6 - 24 V AC/DC 99.01.0.024.98 99.02.0.024.98 99.80.0.024.98 28 - 60 V AC/DC 99.01.0.060.98 99.02.0.060.98 99.80.0.060.98 110 - 240 V AC/DC 99.01.0.230.98 99.02.0.230.98 99.80.0.230.98 Green LED module 6 - 24 V AC/DC 99.01.0.024.59 99.02.0.024.59 99.80.0.024.59 28 - 60 V AC/DC 99.01.0.060.59 99.02.0.060.59 99.80.0.060.59 110 - 240 V AC/DC 99.01.0.230.59 99.02.0.230.59 99.80.0.230.59 Diode module (standard polarity) 6 - 220 V DC 99.01.3.000.00 99.02.3.000.00 99.80.3.000.00 Diode module (non-standard polarity) 6 - 220 V DC 99.01.2.000.00 99.02.2.000.00 99.80.2.000.00 RC module 6 - 24 V AC/DC 99.01.0.024.09 99.02.0.024.09 99.80.0.024.09 28 - 60 V AC/DC 99.01.0.060.09 99.02.0.060.09 99.80.0.060.09 110 - 240 V AC/DC 99.01.0.230.09 99.02.0.230.09 99.80.0.230.09 Residual current bypass module 110 - 240 V AC 99.01.8.230.07 99.02.8.230.07 99.80.8.230.07 199 Series - Coil indication and EMC suppression modules Voltage-current characteristic when Switching Relay Coils. switching a resistive load (fig. 1). When switching a resistive load, the current follows To counteract this potentially damaging effect, relays coils can be suppressed with a Diode, a the phase of the voltage directly (Fig 1). Varistor (voltage dependent resistor) or a RC U When switching relay coils the current and voltage (resistor/capacitor) module dependent on the waveforms are different due to the inductive nature operating voltage. (See below for descriptions of I U of the coil (Fig 2). A brief explanation of this the various Modules available.) ON OFF R + I mechanism is as follows. Whilst the above description is based on the t On energisating the coil, the build up of the working of a DC coil, the reverse polarity voltage magnetic field gives rise to counter electromotive peak on de-energisation applies similarly to AC Voltage-current characteristic when forces which in turn delay the rise in coil current. coils. However, when energising AC coils there will switching a relay coil ( fig. 2). also be a coil inrush current of 1.3 to 1.7 times the On de-energisation, the sudden interruption of the U coil current causes a sudden collapse of the nominal coil current dependent on coil size. If magnetic field, which in turn induces a high voltage coils are fed via a transformer (and particularly if I U of reverse polarity across the coil. This reverse several are energised at the same time) then this ON OFF R L + I polarity voltage peak can reach a value typically 15 may need to taken into account when calculating the VA rating of the transformer. times higher than the supply voltage, and as a t consequence can disturb or destroy electronic devices. Diagrams Functions 99.01.9.xxx.99 only 99.02.9.xxx.99 only Green LED + diode module (standard polarity) 99.80.9.xxx.99 only Recovery diode modules + LED are used for DC only. The reverse voltage peaks of the coil are short circuited by the recovery diode (positive to terminal A1). The release time increases by an approximate factor of 3. If an increase of the release time is undesirable use a Varistor or RC module. The LED indicator lights up when the coil is energized. 99.01.9.xxx.79 only 99.02.9.xxx.79 only Green LED + diode module (non-standard polarity) 99.80.9.xxx.79 only Recovery diode modules + LED are used for DC only. The reverse voltage peaks of the coil are short circuited by the recovery diode (positive to terminal A2). The release time increases by an approximate factor of 3. If an increase of the release time is undesirable use a Varistor or RC module. The LED indicator lights up when the coil is energized. Green LED + Varistor module LED modules + Varistor are used for both AC and DC coils. The reverse voltage peaks of the relay coil are limited by the Varistor to approximately 2.5 times the nominal voltage of the supply. When using DC coils it is essential that positive is connected to terminal A1. The relay release time increases insignificantly. Green LED module LED modules are used for AC and DC. The LED indicator lights up when the coil is energized. When using DC it is essential that positive is connected to terminal A1. 99.01.3.000.00 only 99.02.3.000.00 only Diode module (standard polarity) 99.80.3.000.00 only Recovery diode modules are used for DC only. The reverse voltage peaks of the coil are short circuited by the recovery diode (positive to terminal A1). The release time increases by an approximate factor of 3. If an increase of the release time is undesirable use a Varistor or RC module. 99.01.2.000.00 only 99.02.2.000.00 only Diode module (non-standard polarity) 99.80.2.000.00 only Recovery diode modules are used for DC only. The reverse voltage peaks of the coil are short circuited by the recovery diode (positive to terminal A2). The release time increases by an approximate factor of 3. If an increase of the release time is undesirable use a Varistor or RC module. RC module RC circuit modules are used for AC and DC coils. The reverse voltage peaks of the coil are limited by the RC module to approximately 2.5 times the nominal voltage of the supply. The relay release time increases insignificantly. Residual current bypass module Bypass modules are advisable if 110 or 230v AC relays show any tendency to fail to release. Failure to release can be caused by residual currents from AC proximity switches or inductive coupling caused through long parallel lying AC control lines. 2