Name: Herald Corporation
Address: 1, Chandni Chawk Street, Kolkata, 700072, IN
Telephone: 9830059416
Price range: RS

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.

Model	S1DC8-M3
Function	Combination switching of Outputs
Rated supply voltage	85V to 270V AC, 85V DC to 270V DC
Rated frequency	50 / 60Hz ±5%
Power consumption	AC approx.20VA DC approx.10W
Control relay output	8 (8 NO contacts rated for 5A@250V AC / 28V DC resistive load)
Start signal (S1, S2)	Potential free closure signal for minimum 250msec
Reset signal (R1, R2)	Potential free closure
Time range	1sec to 99hrs 59min 59sec for Delays & ON
Setting accuracy	± 0.2% ± 50msec
Repeat accuracy	± 0.2% ± 50msec
Recovery time	2sec minimum
Variation due to voltage change	± 1% max ± 50msec
Variation due to temp. change	± 2% max ± 50msec
Variation due to frequency change	± 1% max ± 50msec
Ambient temperature	Operation: -10⁰C to +55⁰C, Storage: -25⁰C to +80⁰C
Humidity	Max. 85% RH @ 40⁰C
Service life (under no load)	10⁶ operations minimum
Electrical life (under full load)	10⁵ operations minimum
Insulation resistance	> 100M ohms @ 500V DC
Di-electrical strength	1. 2.5KV AC, 50Hz for 1minute. (Between current carrying and non-current carrying parts). 2. 1.5KV AC, 50Hz for 1minute. (Between contacts and control circuit). 3. 1KV AC, 50Hz for 1minute. (Between non-continuous contacts of the relay).
Electrical connection	Screw type terminals with self lifting clamps
Dimension (over-all)	200 x 130 x 45mm (W x H x D)
Enclosure (series)	S1D series

Output from triac is possible only for AC supply.
To erase the program short the terminals R1 and R2 in program mode. (Potential free). Shift prog./ run switch from prog. to run mode and back to prog. Wait till the sequence and combination window displays “1” before removing the shorting. (S1DC8-M3)
Do not program when R1 and R2 are shorted. (S1DC8-M3)
Before energizing the timer choose the appropriate mode of operation.(Cyclic / Single cycle). (S1DC8-M3)

Apply appropriate personal protective equipment(PPE) and follow safety work practices
Only qualified electrical workers should install this equipment. Such work should be performed only after reading this entire set of instructions.
If the equipment is not used in the manner specified by the manufacturer, the protection provided by the equipment may be impaired.
NEVER work alone.
Shorting of C1-C2 ,S1-S2 , I1-I2 and R1-R2 shall be potential free . Applying power to these terminals will damage the timer permanently .
The successful operation of this equipment depends upon proper handling, installation and operation. Neglecting fundamental installation requirements may lead to personal injury as well as damage to electrical equipment or other property.
NEVER bypass external fusing.
EAPL is not responsible for any consequential damages arising out of use of our products, though the technology is cautiously chosen and implemented like any other well designed good electric device
Timing not initiated.
S1-S2 signalshall be applied.
I1-I2 shall be open .

SPECIFICATION – S1D