ESE ES-362U Users Manual

142 SIERRA ST., EL SEGUNDO, CA 90245 USA [phone] FAX [phone] www.ESE-WEB.com

ES-362U

PRESETTABLE MASTER TIMER

OPERATION AND MAINTENANCE MANUAL

The ES-362U is a four digit, presettable 100 minute master timer (00:00-99:59) with five top-front mounted controls
(UP, DOWN, STOP, RESET and PRESET). Pressing the appropriate switch actuates each of the controls. The timer
runs continuously unless stopped (except in the case of options “X” and “Z”, where it stops at 00:00). If stopped, the
timer holds the time displayed when it was stopped. Pressing the "UP" switch starts the timer counting up from the
time on the display; the "DOWN" switch starts the timer counting down from the time on the display. The "STOP"
switch stops the timer count while the "RESET" switch returns the display to 00:00. The "PRESET" switch presets the
timer to the time set on the front-mounted 4-digit thumbwheel switch. The timer may be reset or preset while it is
stopped or while it is running. If the reset or preset switch is pressed while the timer is running, the timer does not
count until the switch is released. All displays are 0.56” yellow LED digits.

The ES-362U may be remotely controlled via the rear-mounted 9-pin connector (pin designations are given below). A
momentary short to ground or a 5 volt logic "0" is required to actuate the desired UP, DOWN, STOP, RESET or
PRESET function. A remote input should be held low for at least 25 milliseconds to insure that it will be recognized.
The 9-pin connector also provides access to the option “Y” and “Z” relay contacts.

An ESE Serial Time Code output of the displayed timer data is accessible on the rear-mounted BNC connector. This
output is capable of driving up to 100 Remote Displays (such as the ES-372U, ES-361U, LX-361U, ES-366U, LX­366U, ES-364U or ES-369U) through up to 4000' of coaxial cable or twisted pair.

SPECIFICATIONS

ELECTRICAL: Input Voltage 117 VAC, 50/60 Hz; Power Requirement 5W Max.

MECHANICAL: Etched Aluminum case 2.5" High x 10" Wide x 6" Deep

CIRCUIT DESCRIPTION

The ES-362U is based on a single microprocessor chip, timer IC, Z4. It is powered by a +5 volt DC supply consisting
of T1, diodes D1-D3, capacitors C1-C6 and regulator Z2. T1 provides 6 VAC to the voltage doubler circuit composed
of D1-D2, C1-C4. Approximately +12 to +15 volts DC is developed across C1 and C3, which is regulated to 5 volts by
Z2. This is used to power the timer logic. A separate 6 VDC supply is used to supply the segment driver chip Z6. IC
Z4 provides all timing and control functions and generates serial control signals for the display driver chips, Z6 and
Z7. The display operates in multiplex mode. Z6 and Z7 receive segment and digit drive data from Z4 via a data line
(Z4 pin 28), a clock line (Z4 pin 27) and a strobe line (Z4 pin 26). A 50 or 60 Hz clock signal is taken from T1, logic­level converted by Q1 and used for the counting timebase. Z4 also provides the Serial Timer Code, which is buffered
by IC Z3.

ES-362U CONNECTOR DESIGNATIONS

DB-9

Pin Function

1 Up
2 Stop
3 Reset
4 Down
5 Preset
6 Relay Contact (Optional)
7 Relay Contact (Optional)
8 Not Used
9 Ground

Page 1 of 8

Page 2

OPTIONS

C: When this option Crystal Timebase is specified, a trimmer capacitor is included for greater

accuracy. The crystal (.002% accuracy) is factory calibrated to provide an accuracy of 2-3 seconds
per week and can also be field adjusted for greater accuracy.

D: When this option is specified, a standard 6' remote cable that attaches to a rear-mounted 25-Pin

connector is provided. All function controls (UP, DOWN, STOP, RESET and PRESET) and
thumbwheel switches are mounted on a 1/8" clear anodized aluminum switch plate. With this
option, the unit is housed in an etched aluminum case 2.5" High x 8" Wide x 6" Deep. Extra cable
length is available upon request.

J: When this option is specified, input voltage is 220 VAC, 50/60Hz.

N: When this option is specified, a change in count direction occurs when the Down count reaches

zero.

P: When this option is specified, the unit is housed in an etched aluminum rackmount enclosure –

1.75” high x 19” wide x 10” deep.

P2: When this option is specified, a 19” rackmount panel allows any two units with a “P2” option to be

mounted side by side. Option “D” is required.

Q: When this option is specified, the unit is housed in a console mount enclosure with an etched

aluminum front panel – 3.5” high x 9” wide x 8” deep. Option “D” is required.

T: When this option (Tenths of Seconds display) is specified, a tenths digit is included to the right of

seconds, with decimal point. The tenths digit is returned to zero when the reset switch is pressed.

UL: When this option is specified, the unit is supplied with a UL approved wall mount power supply.

W: When this option is specified, the unit is supplied with a three-wire line cord.

X: This option has been optimized for timing and controlling individuals who are engaged in public

speaking. Typically, as a “speaker timer”, the unit is operated in a countdown mode. The timer
counts until it reaches 00:00, when it automatically stops.

When the “PRESET” switch is pressed while holding down the “STOP” switch the thumbwheel
setting is instead loaded to a special memory, called the “yellow time memory”, to be described
below. Normally, during operation, the thumbwheel is left set to the main timer preset time so that
the timer may be easily preset to the beginning of the cycle.

The ES-362UX provides three isolated relay outputs that may be used for controlling different
colored lamps. These are identified as the “GREEN”, “YELLOW” and “RED” outputs. The “GREEN”
output contacts close when the “DOWN” switch is pressed, signaling the speaker to begin talking.
When the timer reaches the time set in the “yellow time memory” the “GREEN” output opens and
the “YELLOW” output contacts close, signaling the speaker to begin summing up. By default, the
“yellow time” is 00:30 (thirty seconds remaining) unless set otherwise as described above. When
the timer reaches 00:00, the “YELLOW” output opens, and the “RED” output closes, signaling the
speaker that his time is up. The timer may then be preset to the beginning of the cycle in
preparation for the next speaker. The outputs remain in their present state (red lamp on) until the
“DOWN” switch is again pressed.

A 25-pin connector provides access to the relay outputs (pin designations are given on page 3). The
relay contacts are rated at 10 watts maximum resistive load, 500 mA maximum switching current,
30 volts maximum. When using incandescent (filament) lamps, care should be taken to operate
well under these ratings, as there is a large current surge when the lamp is energized. Using a
larger buffer relay with an external DC supply is recommended for driving higher powered lamps;
the coil of such a relay should have a spike suppression diode connected across it. LEDs, suitably
current-limited with a resistor, are easily driven by the ES-362UX relays up to the stated rating.

Y: When this option (relay closure output) is specified, a relay closure with a duration of 1 second (100

milliseconds for option "T") occurs when the timer completes a countdown to zero. The relay
contacts are rated at 10 watts maximum resistive load, 500 mA maximum switching current.

Z: When the option (Relay contact closure and stop at zero) is specified, the timer will stop and a reed

relay contact closure output occurs when the timer completes a countdown to zero. The contacts
remain closed until the timer is restarted. The relay contacts are rated at 10 watts maximum
resistive load, 500 mA maximum switching current.

FRONT AND REAR VIEWS

UP DOWN STOP RESET PRESET

Page 3

00 00

ES-362UD AND ES-362UX

When option “D” is ordered, the DB-9 connector is replaced with a DB-25 connector. If options “Y” or “Z” are specified,
access to the relay contacts is found on pins 6 and 7 of the DB-9 connector. When option “X” is ordered, a DB-25
connector is provided for the three relay closures. The pin designations are shown below.

0 0 0 0

“D” PLATE CONNECTOR DESIGNATIONS

Pin Function Pin Function

1 T1 13 T1
2 T2 14 T2
3 T4 Seconds 15 T4 10 Minutes
4 T8 16 T8

5 T1 17 UP
6 T2 18 DOWN
7 T4 10 Seconds 19 STOP Control
8 T8 20 RESET

21 PRESET

9 T1
10 T2 22 Seconds Common
11 T4 Minutes 23 Minutes Common
12 T8 24 Ground (Control Common)

25 Not Used

DB-25 (Option X only)

Pin Function Pin Function

1 Green Relay Contact 6 Not Used
2 Green Relay Contact 7 Red Relay Contact
3 Not Used 8 Red Relay Contact
4 Yellow Relay Contact 9-25 Not Used
5 Yellow Relay Contact