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  • LEADING PROVIDER

    OF INDUSTRIAL SOLUTIONS

  • PRODUCT BEST RATE
  • NO. 1 EASTERN INDIA
  • LEADING PROVIDER

    OF INDUSTRIAL SOLUTIONS

  • PRODUCT BEST RATE
  • NO. 1 EASTERN INDIA

SPECIFICATIONS – ST

    Product Features:

    • Suitable for screw mounting(except ST4-M1).
    • 7 segment display indication for channel and timing operation (except ST-4M1).
    • User friendly programming for ON/OFF time selection independently (except ST-4M1).
    • Hold /Restart feature is available during power failure, Over voltage protection(except ST-4M1).
    • ST-6M1 / ST-10M2 / ST-10M1 : pulse start signal.
    • ST-15M2 / ST-4M1 : continuous start signal.
    • S1D-C8M3 : Comprises of 8 Relays and each relay can be programmed for maximum of 8 switchings in a cycle.
    • Potential free (Zero volts) continuous start signal and continuous signal from differential pressure switch is mandatory for operating the timer.
    FunctionST4-M1ST-15M2
    FunctionSequential timer with 4 channels.Sequential timer with 15 channels.
    Rated supply voltage240V AC85Vto 270V AC
    Operating voltage range± 10% of the rated voltageN.A
    Rated frequency50Hz ± 5%50 / 60Hz ± 5%
    Power consumptionAC approx.20VA / 4W,AC approx.10VA / 2W
    Control relay output4 O/P’S ( 5A @ 250V AC/28 VDC resistive)15 (OP1 to OP15)TRIAC OUTPUT, 500mA @ 250V AC resistive
    Start Signal (S1, S2)Potential free closure signal (continuous)Potential free closure signal (continuous)
    Differential pressure signal (DP1, DP2)N.APotential free closure signal (continuous)
    Time rangeOn time 0.1 to 1 S/M/H for each channel

    Off time 0.1 to 1 S/M/H for each channel

    		On time 0.01sec to 99hrs 59min for each channel

    Off time 0.01sec to 99hrs 59min for each channel

     

    Setting accuracy± 10% max w.r.t full scale ± 100msec± 0.2% max w.r.t setting ± 20msec
    Repeat accuracy± 1% max. ± 100msec± 0.3% max w.r.t ± 20msec
    Recovery time1sec minimum2sec minimum
    Variation due to voltage change± 2% max ± 100msec± 1% max ± 50msec
    Variation due to temp. change± 5% max ± 100msec± 2% max ± 50msec
    Variation due to frequency change± 2% max ± 100msec± 1% max ± 50msec
    Ambient temperatureOperation: -100C to +550C, Storagec -250C to +800C
    HumidityMax. 85% RH @ 400C
    Service life (under no load)N.A106 operation minimum
    Electrical life (under full load)105 operation minimum
    Rated frequency of operation1800 ± 5% operations per hour maximum
    Insulation resistance> 100M ohms @ 500V DC
    Di-electrical strength2.5KV AC, 50Hz for 1minute. (Between current carrying and non-current carrying parts).

    1.5KV AC, 50Hz for 1minute. (Between contacts and control circuit).

    750V AC, 50Hz for 1minute. (Between non-continuous contacts of the relay).

     

    		N.A
    Electrical connectionScrew type terminals with self lifting clamps
    Dimension (over-all)110 x 86 x 68mm (L x W x D)200 x 130 x 45mm (W x H x D)
    Enclosure (series)K seriesS1D series

    Connections:

    Dimensions:

    Timing Diagram:

    Hints on correct use:

    • Output from triac is possible only for AC supply.

    Caution:

    • Do not apply any voltage across S1 & S2, DP1 & DP2.
    • Do not shift HOLD / RESTART slide switch when the timer is in operation.
    • Application of voltage other than the specified one, will permanently damage the timer.
    • Use 2.5mm2 U-type lugs with sleeve for connections and wiring .
    • NOTE : User should not apply external voltage to the terminals that are designated as potential free(Zero/No Volt.