EAPL ST-15M2 Operating Instructions

OPERATING INSTRUCTIONS
EAPL

Front Panel Layout:

OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP8 OP9 OP10
RUN PROG
ON
OFF
RESTART HOLD
INDIVIDUAL COPY ALL
SEQUENCE SELECT ADVANCE
S1 S2 DP1 DP2
ST-15M2 model is microcontroller based sequential timer with 15 channel outputs. The time range for ON and OFF can
be selected from 0.01 Secs upto 99 Hrs. 59 Mins.
Model
ST- 15M2
NOTE: Input triac supply should be only 240V AC

Special Features:

RUN: When the slide switch on the front panel is kept in the RUN position, the timer is ready for operation.
PROG: When the slide switch on the front panel is kept in the PROG position, it enables the timer for programming.
HOLD: When the slide switch on the front panel is kept in the HOLD position, the timing data is retained in case of power failure.
Upon resumption of power the timing continues from the point where it had stopped.
RESTART: When the slide switch is kept in the restart position, the timer resets in case of power failure and starts from beginning
upon power resumption.
INDIVIDUAL: When the slide switch is kept in the INDIVIDUAL position, each channel can be programmed.
COPY All: When the slide switch is kept in the COPY ALL position, programmed ON/OFF time of the first channel shall be copied
to all 15 channels & further programming is disabled.
SEQUENCE: Press sequence to select channel 01 to 15.
SELECT: Press SELECT for all the parameters of programming such as to program most and least significant digit, to select the
time range.
ADVANCE: Press ADVANCE to increment the ON & OFF time.
EXTERNAL START COMMAND: The external command from PLC/DCS can be initiated by shorting S1 & S2 terminals
(Potential Free) and sequence will work till the terminals S1 & S2 are kept shorted. On release, the sequence in progress will complete its
time & then stop,even if differential pressure switch is in healthy condition. Once again, if S1-S2 is closed, it further continues depending
on HOLD/RESTART mode.
DIFFERENTIAL PRESSURE SWITCH: DP1 & DP2 can be connected to DP switch, during operation these terminals has to be
shorted and sequence will work till the terminals DP1 & DP2 are kept shorted. On release, the sequence in progress will complete
its time & then stop, even if external start command (S1 & S2) are shorted. Once again, if DP1-DP2 is closed, it further continues
depending on HOLD/RESTART mode.
The timer will run in cyclic mode as long as S1,S2 & DP1,DP2 are shorted.
SIGN
&
DATE PREPARED BY:
Model : ST-15M2
1A
OP11 OP12 OP13 OP14 OP15
HRS / MIN
MIN / SEC
SEC / SEC
ST - 15M2
SEQUENTIAL TIMER
ELECTRONIC AUTOMATION PVT.LTD.
A1 A2
Time range
0.01Sec to 99Hrs 59 Mins.
Terminal details
A1 & A2 : Power
S1 & S2 : External Start Command (Potential Free)
DP1 & DP2 : Differential Pressure Command (Potential Free Shorting)
Also available with 24V DC potential Input
OP1 to OP15 : Triac outputs (500mA @250V AC)
Source Voltage
85V AC/DC to 270V AC/DC
CHECKED BY:
OPI/070
OPI No.:
01 0f 02
P AGE :
22/05/2007
DA TE :
No. of outputs
15 Triac output
APPROVED BY:
ISSUE # May/2007