Master Time Clock MTC-200 MTC-400 MTC

Master Time Clock MTC-200 MTC-400 MTC
Master Time Clock
MTC-200
MTC-400
MTC-600
Users Manual
MidWest Time Control, Incorporated
P.O. Box 1108 Owasso, Oklahoma 74055
Phone (918)272-9430 FAX (918)272-9441
www.midwest-time.com
EMAIL: sales@midwest-time.com
TABLE OF CONTENTS
TOPIC
PAGE
GENERAL DESCRIPTION
1
INSTALLATION
1
FRONT PANEL CONTROLS
2
PROGRAMING
1. Set UP
2. Security Access Code
3. Set Current Time & Date
4. Set Holiday Schedule
5. Output Circuit Programing
6. Review & Cancel
7. Bulk Memory Erase
8. Daylight Savings Time
9. Memory Full
10. Lamp Test
11. Baud Rate Selection
3
3
3
4
4
4
6
7
7
8
8
8
EQUIPMENT WARNING
8
SECONDARY CLOCK CONTROL
1. Synchronous Wired Secondary Clocks
2. Minute Impulse Secondary Clocks
8
8
10
MAINTENANCE
10
SPECIFICATIONS
11
OPTIONAL EQUIPMENT
11
Copyright 2000 by MidWest Time Control, Incorporated. All rights reserved. No part of this publication may
be reproduced, stored in a retrieval system, or transmitted in any form or by any means without the prior
written permission of MidWest Time Control, Incorporated. While every precaution has been taken in the
preparation of this publication, MidWest Time Control, Incorporated assumes no responsibility for errors
or omissions. Neither is any liability assumed for damages resulting from the use of the information
contained herein.
Rev. 3.1
GENERAL DESCRIPTION
The MTC Series is a Micro-Processor based line of Master Time Clocks and Programed
Controllers. The unit will provide synchronization for a wide variety of industry standard
secondary wall clocks, payroll recorders, time & date stamps, and other time keeping
devices.
The MTC-200 has two output relay circuits, the MTC-400 has four circuits and the
MTC-600 has six circuits.
The output circuits may be individually programed for control of bells, lights, heating and
air conditioning, and other devices which can be scheduled for operation based on the
time and day. Programing for these circuits may be TIME ON - TIME OFF or TIME ON DURATION. Programing can be by individual day, 5 day (Mon.-Fri.), or 7 day.
The clock time base, in normal operation, is synchronized with the 60 Hz AC power line.
During power failures, the time base is accurately maintained by a back up battery
powered oscillator. The back up battery system uses a lithium energy cell with a design
life of ten years. The battery maintains timing and circuit programing during a loss of
primary power.
Holidays may be programed 12 months in advance. The Holiday feature will inhibit the
automatic operation of the Output Circuits during a programed holiday.
Automatic daylight savings time changes. (May be turned off or set to new dates.)
Automatic updating of Impulse secondary clocks after a power failure. The MTC Series
records the time of power failure and the current time. When power is restored, correction
pulses are sent to the clocks.
All operator programing functions are easily performed from the front panel. A security
access code and cabinet lock prevent unauthorized programing changes.
INSTALLATION
1. As you unpack the clock, check for shipping damage to the carton or clock. Report
any damage to the carrier.
2. The MTC series enclosure is designed for surface mounting with three punched
mounting holes in the back panel. The outer enclosure door is removed by opening
and lifting the door on the hinge pins. The control panel may be opened by releasing
two quarter turn fasteners at the RH side. The Control Panel may be removed by
disconnecting the J1 and J2 connectors, and removing three screws securing the
control panel to the hinge. This exposes the enclosure mounting holes at the top
corners and the bottom middle. The Back Plate may be removed, if necessary, by
removing the four nuts securing the back plate to the enclosure. Dimensions for the
enclosure mounting holes are shown in Figure 1. The unit may be semi-flush mounted
to the depth shown in figure 1. The MTC series may be adapted for semi-flush
mounting, in preexisting enclosures, by using the optional Semi-Flush Mounting Kit.
1
3. Knock-outs for 1/2" and 3/4" conduit fittings are
located on the enclosure top, bottom and rear
panels.
The clock must be installed in
accordance with all local wiring codes. The
chassis ground connection must be connected
to a good earth ground circuit. The terminal
strips provided for external wiring connections
are a pressure plate type, the terminals are
rated for clamping two 12 ga. wires.
6.70
8.72
4. Synchronous Wired Secondary Clocks: A typical
connection for 120 VAC or 24 VAC synchronous
wired clocks is shown at Figure 2. Figure 3
shows a wiring method for correcting clocks of
both voltages simultaneously using the optional
Relay Kit.
5. Impulse Secondary Clocks: Note; Control of
Impulse Secondary Clocks requires use of the
optional Impulse Kit. Figures 5 & 6 show typical
connections.
6. Before applying power to the Master Clock,
assure that all wire runs to and from the output
circuits and clock correction circuits are not
shorted or grounded.
14.27
13.27
3.60
3.83
11.63
5.00
2.00
Figure 1
FRONT PANEL CONTROLS
1. The ENTER button is used to enter selected data into the memory. This button is
active in the program mode.
2. The CANCEL button is used in the review mode to cancel programed times and dates
that are no longer needed. It is also used to exit the program mode and return the
clock to normal operation.
3. The AHEAD and BACK buttons are used to increment the display to the time or date
to be programed. They are also used in the Review mode to observe multiple
programed times for the output circuits and multiple holidays. These buttons are
active in the program mode.
4. The MODE button is used to select the functions to be programed or reviewed. An
illuminated indicator will show the selected mode. Each time the MODE button is
pressed, the next indicator in sequence will be illuminated. The Time Set function
allows the setting of current time, day, month, date and year. The Holiday function
allows setting of holiday dates. The Duration, On and Off modes are used to program
the output circuits. The Erase mode is used to bulk erase all programed memory times
and dates except the current time and date. The MODE button is active in the
program mode.
2
5. The REVIEW button is used in conjunction with the MODE button to check the
programed times and dates. The review button is a push ON push OFF control, it
must be turned OFF to advance the MODE function. It is active in the program mode.
6. The SELECT button is used with the mode function to program the month, date and
year in the Time Set mode, and the beginning and ending month and date in the
Holiday mode. The SELECT button is also used in the review mode to observe the
beginning and ending dates of holidays. This button is active in the program mode.
7. The CIRCUIT button is used in the Duration, On and Off modes to select the output
circuit to be programed. It is active in the Duration, On and Off modes.
8. The DAY button is used in the On and Off modes to select the appropriate day or days
for programing the output circuits. It is used in the Time Set mode to set the current
day of the week.
9. The IMPULSE SECONDARY CORRECTION switch is used as an aid for initial
synchronization of secondary impulse clocks. Placing the switch in the RAPID position
causes the clocks to advance to the 58th or 59th minute at a rate of 30 steps per
minute. Returning the switch to the OFF position returns control of the secondary
clock to the Master. Placing the switch in the HR/MIN position causes the clocks to
advance at the rate of 30 steps per minute until the switch is returned to the OFF
position. This switch is active in the program Time Set mode. This switch must be in
the OFF (center) position except while advancing the Impulse Secondary Clocks. (See
Optional Equipment)
10. The WIRE SYNC SECONDARY CORRECTION switch is used as an aid for initial
synchronization of secondary wired synchronous clocks. Placing the switch in the
HOUR position sends one hourly correction signal to the secondary clocks. Placing
the switch to the 12 HOUR position sends one 12 hour correction signal to the
secondary clocks. Move the switch to OFF to return secondary clock control to the
master. This switch is active in the program Time Set mode. This switch must be in
the OFF (center) position except while advancing the Wired Synchronous secondary
clocks.
11. The CIRCUIT CONTROL switches are provided for manual control of the output
circuits. The OFF position turns the output circuit OFF regardless of the programing.
The AUTO position places that output circuit under control of the program. The ON
position places that output circuit ON regardless of the programing.
12. The PROGRAM SELECT switch (Optional) is a four position rotary switch for selecting
one of four programs (A, B, C or D) for automatic control of the output circuits.
Selecting a new program with this switch will transfer the unit control to that new
program at the next minute transition. (See Optional Equipment)
PROGRAMING
1. SET UP
After the initial installation, the clock must be tailored for the desired operation. Open the
Control Panel and note the 4 section selector switch in an opening at the upper LH corner
of the control panel rear cover. The 12-24 switch selects the Control Panel display
3
format (12 or 24 hour). The 58-59 switch selects the timing sequence for Impulse
Secondary clocks. The 12H IMP switch selects the timing sequence for 12 hour correction
of minute impulse secondary clocks (see Minute Impulse Secondary Clock Correction
section). The DST switch enables or disables the automatic correction of daylight savings
time. Set this switch to DST if automatic correction is desired.
2. SECURITY ACCESS CODE
A Security Access Code must be entered before a time set, a program change, addition
or review. The code is a simple and easily remembered front panel button sequence
(ENTER, BACK, CANCEL and AHEAD). When these buttons are pressed in the correct
sequence, the Program Control indicator will illuminate. Program changes can be made
any time the program control indicator is illuminated. To leave the Program mode, press
the CANCEL button. This restores the unit to normal operation. The Program Control
mode will time out automatically 90 seconds after the last button is pressed. This prevents
leaving the clock unattended in the program mode. The Program Control indicator must
be illuminated during all programing operations.
In cases where the Security Access Code is not required or desired, it may be defeated
as follows; press the following front panel buttons, in sequence; (ENTER, BACK, CANCEL
and CIRCUIT). All front panel indicators except circuit status will illuminate. Press the
CANCEL button. The security access code is now defeated. To enter the program mode,
press the MODE button.
To reset the Security Access Code, press the following front panel buttons, in sequence;
(ENTER, BACK, CANCEL and SELECT). All front panel indicators except circuit status
will illuminate. Press the CANCEL button. The security access code is now reset.
Note: All Master Clocks are shipped from the factory with the security access code active.
For units equipped with the RS232-COM or RS232-WWV Options, the program mode may
not be accessed while the unit is communicating with a remote device.
3. SET CURRENT TIME & DATE
Note: The AHEAD/BACK buttons reset the seconds counter to zero as the button is
released. This feature can be used to accurately synchronize the Master Clock with other
timekeeping devices.
STEP
1
2
3
4
5
6
7
8
9
10
11
PRESS
INDICATION
COMMENT
MODE
AHEAD/BACK
SELECT
AHEAD/BACK
SELECT
AHEAD/BACK
SELECT
AHEAD/BACK
DAY
CANCEL
PROGRAM CONTROL Enter Security Access Code
TIME SET
Set Current Time (Note PM Ind)
MONTH
Set Current Month (1=Jan. 12=Dec.)
DATE
Set Cur. Date
YEAR
Set Cur. Year, 94=1994
Set Cur. Day of the week
Return to normal operation
4
4.
SET HOLIDAY SCHEDULE
Note: Each Holiday must be programed with a beginning and ending month and date.
Beginning and ending dates can not be the same.
STEP
1
2
3
4
5
6
7
8
9
10
11
PRESS
INDICATION
COMMENT
PROGRAM CONTROL
HOLIDAY, BEGIN,
MONTH
Enter Security Access Code
MODE
AHEAD/BACK
SELECT
AHEAD/BACK
SELECT
AHEAD/BACK
SELECT
AHEAD/BACK
ENTER
CANCEL
Set month of holiday (1=Jan. 12=Dec.)
BEGIN, DATE
Set date for first day of holiday
END, MONTH
Set month of holiday ending
END, DATE
Set date for first day of normal operation
The display will blank momentarily
Return to normal operation
A total of ten holidays may be programed by repeating steps 3 thru 10. All holiday starting
and ending dates must be within the next twelve calendar months. Operation of the output
circuits is inhibited During holidays.
For units equipped with the 4 Program Select Option, the holidays may be programed at
any program select position and is valid for all programs.
5.
OUTPUT CIRCUIT PROGRAMING
All output circuit programs entered will remain in the memory until cancelled.
All output circuits with a programed ON time must have a programed OFF time or
DURATION.
For units equipped with the 4 Program Select Option, set the program selector to the
desired program (A, B, C or D). The Duration Periods may be programed at any Program
Select Position and is valid for all position. The ON and OFF schedules for each program
are independent and must be programed with the program selector set to the proper
position.
Assume circuit 1 is to ring a bell for 10 seconds Monday thru Friday at 8:00 AM, 12:00
Noon, and 4:00 PM.
STEP
1
2
3
4
5
6
PRESS
MODE
CIRCUIT
AHEAD/BACK
ENTER
MODE
INDICATION
COMMENT
PROGRAM CONTROL
DURATION
CIRCUIT 1
Enter security access code
Set display to 10 (Range = 1-59 Sec.)
Display will blank momentarily
ON
5
7
8
9
10
11
12
13
14
DAY
AHEAD/BACK
ENTER
AHEAD/BACK
ENTER
AHEAD/BACK
ENTER
CANCEL
MO,TU,WE,TH,FR
Set time to 8:00 AM
Display will blank momentarily
Set time to 12:00 Noon (PM Ind. ON)
Display will blank momentarily
Set time to 4:00 PM
Display will blank momentarily
Return to normal operation
Circuit 2 is to turn on a light at 7:45 AM Monday and off at 5:15 PM Monday.
1
2
3
4
5
6
7
8
9
10
11
12
MODE
CIRCUIT
DAY
AHEAD/BACK
ENTER
MODE
CIRCUIT
DAY
AHEAD/BACK
ENTER
CANCEL
PROGRAM CONTROL
ON
CIRCUIT 2
MO
Enter security access code
MO = Monday
Set time to 7:45 AM
Display will blank momentarily
OFF
CIRCUIT 2
MO
Set time to 5:15 PM
Display will blank momentarily
Return to normal operation
Circuit 3 is to turn on the outside lights at 6:00 PM and off at 10:30 PM
every day.
1
2
3
4
5
6
7
8
9
10
11
12
MODE
CIRCUIT
DAY
AHEAD/BACK
ENTER
MODE
CIRCUIT
DAY
AHEAD/BACK
ENTER
CANCEL
PROGRAM CONTROL
Enter security access code
ON
CIRCUIT 3
SU,MO,TU,WE,TH,FR,SA
Set time to 6:00 PM
Display will blank momentarily
OFF
CIRCUIT 3
SU,MO,TU,WE,TH,FR,SA
Set time to 10:30 PM
Display will blank momentarily
Return to normal operation
When programming multiple functions, step 1 is only necessary at the beginning of the first
program and step 12 at the end of the last program.
6.
REVIEW AND CANCEL
Note: Programed holiday dates and output circuit days and time may be cancelled while
in REVIEW by pressing the CANCEL button while the date, day or time to be cancelled is
displayed. Do not attempt to leave the program mode while the REVIEW Indicator is ON,
the CANCEL button is used in the REVIEW mode to cancel programed dates and times.
To leave the program mode when in REVIEW, press the REVIEW button to extinguish the
REVIEW Indicator, then press the CANCEL button.
6
REVIEW OUTPUT CIRCUIT PROGRAMING
STEP PRESS
1
2
3
4
MODE
REVIEW
CIRCUIT
5
6
7
8
9
REVIEW
MODE
REVIEW
CIRCUIT
DAY
10
11
12
13
14
REVIEW
MODE
REVIEW
CIRCUIT
DAY
15
16
REVIEW
CANCEL
INDICATION
COMMENT
PROGRAM CONTROL
DURATION
REVIEW
CIRCUIT 1, 2, 3, 4, 5, or 6
Enter security access code
ON
REVIEW
CIRCUIT 1, 2, 3, 4, 5, or 6
SU, MO, TU, WE,
TH, FR, or SA
OFF
REVIEW
CIRCUIT 1, 2, 3, 4, 5, or 6
SU, MO, TU, WE,
TH, FR, or SA
Any programed duration will be
displayed
Review off
Programed ON times will be
displayed for for each day. Multiple
ON times may be checked by using
the AHEAD or BACK button at each
day.
Review off
Programed OFF times will be
displayed each day. Multiple OFF
times may be checked by using the
AHEAD or BACK buttons at each
day.
Review off
Return to normal operation
When reviewing the output circuit program, the scheduled event times are displayed in
chronological order, not in the order programed.
REVIEW HOLIDAYS
STEP
PRESS
INDICATION
COMMENT
1
2
3
MODE
REVIEW
Enter Security access code
SELECT
PROGRAM CONTROL
HOLIDAY
REVIEW, BEGIN,
MONTH, DATE
END, MONTH, DATE
4
5
AHEAD
BEGIN, MONTH, DATE
6
SELECT
END, MONTH, DATE
7
8
REVIEW
CANCEL
Holiday Starting month and
date is displayed
Holiday Ending month and date is
displayed
Next Holiday Starting month and date is
displayed
Holiday Ending month an date is
displayed
Review off
Return to normal operation
Repeating steps 5 and 6 will display all programed holiday beginning and ending dates.
For units equipped with the 4 Program Select Option, the Duration Periods and Holiday
Schedules may be reviewed and cancelled in any program select position and is valid for
all positions. Reviewing and Cancelling ON and OFF schedules must have the Program
Selector set to the desired program.
7
7.
STEP
BULK MEMORY ERASE
PRESS
INDICATION
1
2
3
MODE
ENTER
4
CANCEL
COMMENT
PROGRAM CONTROL
ERASE
Enter security access code
The display will show :88 for approx. 5
seconds. The mode will revert to Time Set
with the current time and day displayed. All
user programed events will be erased
except the current time, day and date.
Return to normal operation.
For units equipped with the 4 Program Select option, the program to be bulk erased must be
selected. Erasing program A will erase the Duration Periods and the Holiday Schedules. Erasing
programs B, C or D has no effect on the Duration Periods or Holiday schedules.
8.
DAYLIGHT SAVINGS TIME CHANGE
NOTE: The current legislated date for daylight savings time is factory programed. The
date can not be reviewed. The MTC-200, MTC-400 and MTC-600 will automatically
change at the current legislated day if the correct DAY, DATE, and TIME is set and the
DST set up switch is ON.
If the AC power is off during a scheduled daylight savings time change, the clock must be
set to the new time using the Current Time and Day set procedure.
A special security access code is required to change the daylight savings time. The code
is a four button sequence which must be entered in the correct order (ENTER, BACK,
CANCEL, DAY).
Note: This procedure will override the factory programed dates.
STEP PRESS
INDICATION
COMMENT
1
PROGRAM CONTROL
BEGIN, MONTH
2
AHEAD/BACK
3
SELECT
BEGIN, DATE
4
AHEAD/BACK
5
SELECT
END, MONTH
6
AHEAD/BACK
7
SELECT
END, DATE
8
AHEAD/BACK
9
ENTER
10
CANCEL
Review user programed daylight savings time
1
PROGRAM CONTROL
BEGIN, MONTH
2
REVIEW
REVIEW
3
SELECT
4
5
REVIEW
CANCEL
Enter special security access code
Set DST beginning month
Set DST beginning date
Set DST ending month
Set DST ending date
Return to normal operation
Enter special security access code
Selects between beginning and ending
dates of user programed daylight saving
time
Return to DST Program Control
Return to normal operation
Note: User programed daylight savings time may be cancelled during this review procedure by
pressing the CANCEL button.
8
9.
MEMORY FULL
An attempt to program times and dates in excess of the memory capacity will be indicated
on the Display by a :99. This indication appears with the first program attempt in excess
of the memory capacity.
10.
LAMP TEST
The lamp test is a method of turning on all of the front panel indicators except Circuit
Status. This test provides a simple test to indicate proper circuit operation. Press the
following front panel buttons in sequence; (ENTER, BACK, CANCEL & REVIEW). All front
panel indicators except circuit status will illuminate. Press CANCEL, indicators will return
to normal condition.
11.
BAUD RATE SELECTION
For units equipped with a communications port (RS232 or RS485 Options) the baud rate
must be set. The available baud rate settings are 1200, 2400, 4800 and 9600. The rate
set at the Master Clock must match that of the communicating device.
A special security access code is required to set the Baud Rate. The code is a four button
sequence which must be entered in the correct order (ENTER, BACK, CANCEL, BACK).
When the access code is entered, the display will indicate the current Baud Rate. To
change the Baud Rate, use the AHEAD button. When the desired rate is indicated, press
the ENTER button.
EQUIPMENT WARNING
Remote equipment controlled by this clock should have a warning sign to indicate that the
equipment is remotely controlled. Primary power should be removed from that equipment
prior to any maintenance or repair operations.
SECONDARY CLOCK CONTROL
The MTC Series Master Time Clock controls and synchronizes a wide range of secondary
clocks. It will control one variety of Minute Impulse Clocks and one variety of Synchronous
Clocks simultaneously when equipped with the Optional Impulse Kit.
1. Synchronous Wired Secondary Clocks
The MTC Series Master Clock will synchronize a variety of industry standard Synchronous
Wired secondary clocks. The unit may be programed by the user for the following clocks:
Note: The clock selection code is set to :00, at the factory.
9
CODE
CLOCK TYPE
CORRECTION
:00
MidWest Time
:01
Standard
:02
Standard
W/Aux.
:03
:04
National Hourly
National 12 Hour
Hourly-8 Seconds @ XX:57:54,
Twelve Hour-14 seconds 5:57:54
Hourly-35 seconds @ XX:59:25,
Twelve Hour-12 minutes @ 5:12:00
Hourly-35 seconds @ XX:59:25,
Twelve Hour-12 minutes @ 5:12:00
Run Motor power is removed
from XX:59:00 to XX:00:00
Hourly-35 seconds @ XX:00:00
Hourly-25 seconds @ XX:00:00
Twelve Hour-25 minutes @ 6:00:00
To select the code, enter the special four button access code (AHEAD, CANCEL, BACK
& ENTER) in that sequence. The Digital Display will indicate a two digit code number.
With the AHEAD button, select the desired correction code, press ENTER. The unit will
be restored to normal operation. The unit will automatically return to normal operation 90
seconds after the last button is pressed with the last code displayed on the digital indicator
being the selected code.
Simplex, Cincinnati D10 and Cincinnati D12 wall clocks use Code :00.
Code :01
Code :02
Code :03
Code :04
Does not correct the second hand for these clocks.
Requires the use of the highest numbered output circuit. Place the Circuit
Control switch for this circuit to the AUTO position.
The second hand on these clocks is not correctable.
The second hand on these clocks is not correctable.
Refer to figure 2 & 3 for Code :00, :01, :03 & :04 connecting diagram. Refer to figure 4 for
Code :02 connecting diagram.
10
2. Minute Impulse Secondary Clocks
When equipped with the optional Impulse Kit the MTC Series Master Clock will operate
and correct a wide variety of minute impulse clocks requiring a 24 VDC stepping pulse.
The 58-59 and 12 HR IMP Set Up switches must be set properly. These switches are
located on the back of the control panel in an opening at the upper LH corner.
58th Min. Type
59th Min. Type
12 HR IMP Type
24 VDC signal for 2 seconds at 58th second. Hourly correction for
minute hand at 58th min. up to 10 minutes fast or 25 minutes slow
between XX:49 and XX:58.
24 VDC signal for 2 seconds at 58th second. Hourly correction for
minute hand at 59th min.up to 10 minutes fast or 25 minutes slow
between XX:50 and XX:59.
This is a 59th Min. 2 Wire Reverse Polarity Type with 12 Hour
Update capability. 24 VDC signal for 2 seconds at 58th second.
Hourly Correction for minute hand. Hour hand is corrected two times
each day between 5:00 and 7:00.
Refer to figure 6 for connection of 2 Wire Reverse Polarity Minute Impulse Clocks; (58th
Min.), (59th Min.) or (59th Min. with 12 Hour Update).
Refer to figure 5 for connection of 3 Wire Minute Impulse Clocks: (58th Min.) or (59th
Min.).
11
MAINTENANCE
There are a limited number of field maintenance items in the MTC Series.
Input Power Fuse (Front Panel)
3 Amp. Littlefuse 312003 or Equiv.
Output Circuit Fuses
10 Amp. Littlefuse 312010 or Equiv.
(F1, F2, F3, F4, F5, & F6)
Sync. Wired Correction Fuse (F7)
10 Amp. Littlefuse 312010 or Equiv.
Impulse Correction Fuse (F8)
4 Amp. Littlefuse 312004 or Equiv.
Impulse Relay
MidWest Time Control Part No. 530001-02
Note: The life of the Impulse Relays will be determined by the number of Impulse Clocks
connected. At the rated contact load (10 Amp.), the relay contacts should last more than 1 year.
The relays are socket mounted and may be easily replaced. The relays should be set up for
scheduled replacement approximately once per year to avoid failure at an inopportune time.
Back Up Battery: The battery is a Lithium Energy Cell with a design life of 10 years. The
symptoms of battery failure will be a loss of time or programing during a power failure. If this
occurs, contact your dealer for replacement instructions.
SPECIFICATIONS
Power requirements
Program Capacity
Holidays
Operating Temp.
Storage Temp.
Humidity
Weight
115 VAC, 60 HZ, 15 Watts Max.
650 Events (See Optional Equipment)
10 Holidays (Holidays may be multiple days)
0 to 60 Deg. C
-30 to 75 Deg. C
95% non-condensing
19.25 Lbs.
OPTIONAL EQUIPMENT
Impulse Kit - Required for impulse clock correction. Provides a 4 Amp. power supply (Includes
Impulse power transformer, Impulse Relays and mounting hardware)
Semi-Flush Mounting Kit - Adapts master clock for mounting in a preexisting 941 type enclosure.
(Includes a new Enclosure Back Panel and Door)
Relay Kit - Used for auxiliary control functions or to expand capacity of the output circuit relays.
Contacts are DPDT 10 Amp. rating. (May be ordered with 1 or 2 Relays)
Four Program Option - This options expands the program capacity to 2600 events divided into
four 650 event programs (A,B,C & D). The programs are manually selected by a front panel
switch. This is a factory installed option.
Expanded Memory Option - This option expands the program capacity from 650 to 2600 weekly
events all in one program. This is a factory installed option.
RS232-COM Communications Option - This option provides a RS232 port and revised software.
This port is used to communicate with a computer. The computer time is synchronized with the
Master Clock. The output circuits may also be programed from the computer terminal. This is a
factory installed option.
RS485 Option - This option provides a RS485 output port. This is a 2 wire communications port
designed to communicate with MidWest Time Control's Digital clocks and to synchronize the time
in multiple computer installations. This is a factory installed option.
The MTC Series of Master Clock is a microprocessor based unit controlled by software. It is a very
versatile unit that can be adapted for a wide range of special applications. Consult your dealer
or the factory for special requirements.
12
WARRANTY
MidWest Time Control, Incorporated warrants the MTC Series Master Clock to be free of
defects in materials and workmanship for a period of one year from the date of delivery to
the purchaser. This period may be extended to one year from the date of delivery to a
distributors vendee, however in no event will the warranty be extended for more than one
year from the date of installation or two years from the date of shipment from the factory
whichever is sooner.
We also warrant that if operated properly, the unit will operate within the advertised
specifications for the stated warranty period. Excluded from this warranty are fuses and
socket mounted relays. These are considered normal maintenance items.
The liability of MidWest Time Control, Incorporated under this warranty shall be limited to
repairing or replacing a unit proved to be defective and returned to us with transportation
charges prepaid within the stated warranty period.
This warranty is in lieu of all other warranties, express or implied and constitutes all of our
liabilities to the purchaser or user. We assume no liability for consequential damages, for
anticipated or lost profits, incidental damages or loss of time or other losses incurred by
the purchaser, user or any third party in connection with the product covered by this
warranty.
This warranty will be void for any product with defects which have been caused by abuse,
neglect, improper installation, unauthorized repair or modification.
For return authorization under this warranty, contact;
Customer Service Department
MidWest Time Control, Incorporated
P.O. Box 1108
Owasso, Oklahoma 74055
Phone (918)272-9430
FAX (918)272-9441
www.midwest-time.com
EMAIL: sales@midwest-time.com
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