Time Mark 269 Data Sheet
R
LISTED
MODEL 269
TIME MARK is a division of
Over & Under
3-Phase Monitor
Monitors for High Voltage, Low Voltage,
Phase Loss & Phase Reversal
4 Voltage Ranges
Automatic Reset
5 Year Unconditional Warranty
DESCRIPTION
The Model 269 Over & Under 3-Phase Monitor continuously monitors 3-phase lines for high voltage, low voltage,
phase loss or phase reversal. This device features a solidstate voltage and phase angle sensing circuit, which drives
a SPDT output relay.
The Model 269 is independent of the system load, and
may be used on any horsepower motor. When phase
sequence is correct, and the voltage remains between the
upper and lower trip points, the output relay remains
energized. When a fault condition is sensed, the output
relay drops out.
The Model 269 does not require a neutral connection, and
can be used on Wye or Delta systems. Each of the four
voltage versions can be adjusted over a wide range. An
adjustable trip delay (1-10 seconds) prevents nuisance
tripping. OVER and UNDER voltage failure indicators aid
in calibration and system troubleshooting.
DIMENSIONS
SPECIFICATIONS
Model A269 B269 C269 EX269
Nominal AC Voltage
(phase to phase)
Adj Range - Upper
- Lower
Frequency 60Hz 50Hz
Power Consumption
Transient Protection 2500VRMS for 10ms
Repeat Accuracy
Response Time Adjustable from 1-10 seconds ±5%
Reset Time
Reset Type Automatic
Dead Band Approximately 2%
Output Contacts SPDT 10A at 240VAC resistive
Expected Relay Life Mech: 10 million operations
Operating Temp - 20º to +130º F
Humidity Tolerance 0-97% w/o condensation
Enclosure Material ABS Plastic
Mounting Surface
Weight 9 oz.
Agency Approval UL Listed & CSA Certified
120VAC 208/240VAC 480VAC 380VAC
110 - 145V
80 - 115V
1.5W
Elec: 100,000 operations at rated load
210 - 280V
170 - 240V
3W 6W 6W
± 0.1% of set point (fixed conditions)
400 - 540V
380 - 460V
0.25 seconds
350 - 450V
300 - 400V
11/2011
© 2011 TIME MARK CORPORATION
MODEL 269
Motor
A B C
M
Start
Stop
Optional Alarm Indicator
Control
Voltage
M
M
M
M
O/L's
Model 269
L1
L2
L3
TIME MARK is a division of
Over & Under 3-Phase Monitor
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
GENERAL SAFETY
POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 269 .
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
WARNING
THE MODEL 269 IS NOT TO BE USED IN
APPLICATIONS WHERE VOLTAGES TO BE
MONITORED OR SWITCHED WILL EXCEED
VOLTAGE SPECIFICATIONS FOR THE PARTICULAR
UNIT. SEE ‘ADJUST-MENT RANGE’ IN THE TABLE
ON THE REVERSE SIDE OF THIS DATA SHEET.
INSTALLATION
Connect 3-phase wiring to the terminals marked A, B and C.
Connect the control wires to the terminals with the relay
contact markings. The markings shown are in a TRIPPED
condition.
Apply power. If the indicator lights are ON, and the contacts
do not transfer when power is applied, check that all three
phases are present and of the correct voltage. If all phases
are correct, rotate the UNDER VOLTS adjustment fully
counter-clockwise, and the OVER VOLTS adjustment fully
clockwise.
If the contacts still do not transfer, remove power from the unit,
and reverse two of the three input wires. Re-apply power.
The contacts should then transfer (LED-off).
ADJUSTMENT
Turn the DELAY SECONDS trip delay adjustment counterclockwise.
Rotate the UNDER VOLTS adjustment slowly clockwise until
the contacts transfer to a tripped condition (LED-on).
Slowly turn the UNDER VOLTS adjustment back counterclockwise until the contacts reset to the normal condition
(LED-off).
Rotate the OVER VOLTS adjustment counter-clockwise until
the contacts trip (LED-on).
Slowly turn the OVER VOLTS adjustment back clockwise until
the contacts reset to the normal condition (LED-off).
These settings will be correct for most installations.
Set the SECONDS delay adjustment to the desired amount of
trip delay. This delay will help prevent nuisance tripping.
Should nuisance tripping still occur, turn the OVER VOLTS,
and UNDER VOLTS adjustments slightly farther.
NOTE: In eliminating nuisance tripping, the voltage adjustments should be rotated in very small increments,
until the true nuisance trips no longer occur.
TYPICAL APPLICATION
Shows No Power Applied
TROUBLESHOOTING
Should the Model 269 fail to operate properly, check that all
three voltages are present, and are of the correct level.
Check all fuses, and verify that all wiring connections are
correct. Should problems persist, contact your local Time
Mark Distributor, or the factory for further assistance.
WARRANTY
This product is warranted to be free from defects in materials
and workmanship, and is covered by our exclusive 5-year
Unconditional Warranty. Should this device fail to operate
for any reason, we will repair it for five years from the date of
manufacture. For complete warranty details, see the Terms
and Conditions of Sales page in the front section of the Time
Mark catalog or contact Time Mark at 1-800-862-2875.
11/2011
© 2011 TIME MARK CORPORATION
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