Auber Instruments JSL-73B Instruction Manual

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Instruction Manual

JSL-73B Multi-Event Timer for Beer Brewing

Version 2.1 (May, 2017)

1. Overview

This timer is designed for home brewing when the brewer needs to follow a
recipe that calls for ingredients to be added at different time points during the
wort boiling process. It can help the brewer keep track of time and remind the
brewer to add ingredients at specific time points. The brewer can simply enter
the boiling time of each ingredient specified by a beer recipe, the JSL-73B
timer will automatically convert it to a multi-event timer whose alarm will go off
at the moment when a new ingredient should be added, as well as when the
boiling process is supposed to end. The relay output of the timer should be
connected to an external flashing buzzer which is sold separately.

2. Specifications

Event timer range: 0 minute to 255 minutes.
Number of events: 1 to 9.
Timer accuracy: < 1 s/day.
Power supply: 90 - 260 V AC or DC.
Power consumption: < 2 W.
Relay output: 7 A @ 240 VAC, 10 A @ 120 VAC and 24 VDC (resistive load).
Average relay life: 100,000 times at rated current.
Operating temperature: 0 - 60°C.
Humidity: 0 - 95% RH.
Panel cutout: 44.5 x 44.5 mm.
Outer dimension: 48 x 48 x 78 mm.

3. Front Panel

the number of the upcoming event (e.g., t2, t3...). When an event time is up, it
will flash the event number (t2, t3, t4, and etc.) until the alarm is turned off. In
programming mode, it shows the name of a parameter. In stopwatch mode (nE
= 1, tdIr = up), it will display the duration of current event.

2). Bottom display window: In normal operation mode, it shows the remaining
time to the end of all events. If the remaining time is longer than 99’59”, the
display will show minutes only. In programming mode, it shows the set value of
the parameter. In stop watch mode, it will display the duration of accumulated
time that has elapsed.

3). RUN indicator: This red indicator should be solid on when the timer is
running; it flashes when the timer is paused; it should be off when the timer is
stopped.

4). OUT indicator: This green indicator turns on when the relay is on (pull-in);
turns off when the relay is off (drop-out). This indicator should be synchronized
with an external flashing buzzer if it was connected to the relay.

5). SET key: Press it momentarily to set event timers t1, t2, t3, and so on;
press and hold it for 1 second to enter the parameter setting mode. In
parameter setting mode, press it momentarily will go to next parameter setting.
This key is disabled when timer is running.

6). V/ RST key: Reset timer or decrease a parameter value. When the timer is
running or is showing “END”, press it to stop the timer and reset the timer. In
the parameter setting mode, press it will decrease the value of a parameter.
Each time you press and release this key, the value will decrease by one unit.
When you press and hold it, the value will continuously decrease; as the
holding time increases, the speed of number decreasing will accelerate.

7). ^ / MUT key: Mute/cancel the relay, or increase a parameter value. When
the timer is running, press this key to allow the coming up event number (t2, t3,
and etc.) to be shown in the top display window. When an event timer is up and
relay is pulled in, press this key once to release the relay. This key only affects
the relay. It does not interrupt the running timer. In stopwatch mode, press it to
restart the count-up timer in the top display window as the second stopwatch.

In the parameter setting mode, press it to increase the value of a parameter.
Each time you press and release, the value will increase by one unit. When
you press and hold it, the value will continuously increase; as the holding time
increases, the speed of number increasing will accelerate.

Figure1. Front panel of JSL-73B timer.

1). Top display window: In normal operation mode, it shows the remaining time
to the next event. If the remaining time is longer than 99'59”, the display will
show minutes only. When ^/MUT key is pressed, it will show

8). START key: Press it to start the timer. When timer is flashing “END”, press
it once to stop the flashing, and get the timer ready for the next run. Press the
START key again will restart the timer. This key is disabled when timer is
running. In stopwatch mode, press it to start and stop the timer.

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4. Terminal Assignment

COMRSTMUT

START

Figure 2. Terminal assignment of JSL-73B.

Details:

1

2

3

4

5

6

7

NC

OUT

NO

8

9

90~26 0V

AC

10

The top display window will show the remaining time before the next event, i.e.,
when the next ingredient should be added to the wort. The lower window will
show the remaining time to the end of the wort-boiling process. The alarm relay
will pull in when a new event timer starts or when all events end.

Please see Figure 3 for a schematic diagram showing the relationship between
multiple events and the alarm relay status.

Relay On

Relay Off

Start

Event 1

Ad

1

t

1 2 3

Event 2 Event 3

Ad

2

t

t3

Ad

Boiling Time

End

1). Power for the timer needs to be connected to terminal 9 and 10. The
voltage should be in the range from 90 to 260 VAC.

2). Terminal 6, 7, and 8 are for relay output. Pin 6 and 7 is a pair of normally­open (NC) contacts. Pin 7 and 8 is a pair of normally-open (NO) contacts. The
relay is a “dry switch” that does not provide power by itself. Please see the
wiring examples in Section 9.

3). Terminal 5 is the start terminal that has the same function as the START

key on the front panel. Please see a note at the end this section.

4). Terminal 4 is the pause/mute terminal that function the same as the
“^/MUT” key on the front panel.

5). Terminal 3 is the reset terminal that function the same as the “V/RST” key in

the front panel.

6). Terminal 1 is the common contact for the terminal 3/4/5. Terminal 2 is
unassigned. There are two ways to operate terminal 3, 4 and 5:

6.a) Connecting a normally open (NO) momentary push button switch between
the terminal (3, 4 or 5) to the COM (1). Please note, the function starts when
you release (or open) the button of the switch, not when you press down the
switch.

6.b) Connecting a DC logic signal (TTL or CMOS or voltage in the range from 3

to 30 VDC) between the terminal (3, 4 or 5) to the COM (1). Please note, the
function is rising-edge triggered. The logic signal should normally be at high
level. The function starts when the signal goes from low to high. If you have an
inverted logic signal, you need to connect a NPN transistor between terminal
and COM; add 10 kohm resistor to the gate for signal input.

5. Operation and Parameters

In JSL-73B timer, an event is defined as an action of adding an ingredient at a
specific time point during the wort boiling process. An event timer starts from
the moment that the ingredient is being added to the wort; it stops when the
wort-boiling process comes to an end. There can be multiple events during the
wort-boiling process. Each event should have a different starting time point, but
they all end at the same time, which is when the boiling process ends.

Figure 3. A schematic diagram of how the event timers and the relay work on
JSL-73B timer.

A special case of the timer is to set it as a stopwatch. In this case, each
window will show a count-up timer. There is no ending point and the relay won’t
pull in. The timer showed in the top window can be re-started while the timer in
the bottom window is still running. The details can be found in section 5.2.

Table 1. Parameters of JSL-73B timer.

Code Description Setting Range Initial Setting Details

Press and hold SET key for 1 second when timer is stopped.

nE

tdir* Timer direction up, dn dn 5.2

Ad

T1

T2 ** Event 2 timer 0 min to t1 20 min 5.4

T3 ** Event 3 timer 0 min to t2 1 min 5.4

The total number of

events

Alarm duration 0 ~ 200 sec 10 sec 5.3

Short press SET key when timer is stopped.

Event 1 timer 0 min to 255 min 60 min 5.4

1 ~ 9 3 5.1

Note *: The parameter tdlr is available only when the number of events nE is
set to 1.

Note **: The event timer t2, t3, and so on., will appear only when the number of
events nE is set to such a number.

5.1) nE, the total number of events. An event can be associated with an activity
such has adding hops or special ingredients. Each event has its own timer. nE
can be set to a number from 1 to 9. The output relay will pull in at the beginning
of all events except the first event, and at the end of the entire boiling process.
So nE is equal to the total number of times you want the buzzer to ring. For
example, if you only add hops at the very beginning of the boiling process, and

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