TIME MARK 2744 User manual

SPECIFICATIONS
Model 2744-24 2744-120 2744-220
Supply voltage 20-28VAC 100-130VAC 190-250VAC
Max supply voltage 30V 140V 260V
Power consumption 1.5 Watts max.
Transient protection 2500 VRMS for 10 msec
Frequency range 50 -400 Hz
Input current 1-5 amps ±5%
Max. input current 40 amps for 2 sec
Current range 1-5 amps ± 5%
Start delay 5to 15 sec ± 5%
Dead band 4% max.
Contact rating DPDT 10A at 240 VAC resistive
Expected relay life
Mech: 10 million operations Elec: 100,000 ops at rated load
Operating temperature -40º to +131º F
Enclosure material ABS plastic
Weight 1 lb. 5.9 oz.
DESCRIPTION
The Model 27443-Phase Over Current Monitor is designed
to monitor the current level of a three-phase line or to compare
the currents of three single-phase lines.
If one or more current inputs rises above the trip level after the
start delay has expired, the internal relay will de-energize.
An adjustable start delay of 5to 15 seconds will prevent
nuisance trippingon start up. The current trip point is
adjustable from 1 to 5 amps, and matching current
transformers are available to extend the current range of the
monitor.
The Model 2744will automatically reset when the current fault
is corrected. An external manual reset can be added by
installing a normally closed switch between the terminals
marked RESET.
DIMENSIONS
ll Monitors over current
ll Fail-safe design
ll Automatic or manual reset
ll Adjustable start delay timer
ll For use on motors, pumps, conveyors, etc.
3.5 3.125
4.5
2.25
4.8
4.0
TYPICAL APPLICATION
Over-current; auto reset; ≤≤ 5 amps
MODEL 2744
3-Phase Over Current
Monitor
For Motor Jams
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
August 2003
© 2003 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
Shows No Power Applied

INSTALLATION
Mount the Model 2744in a suitable enclosure.
If the current to be monitored is 5 amps or less, break and
connect each wire to the three inputs of the Model 2744(see
TYPICAL APPLICATION on front page). Observe polarity.
If the current to be monitored is greater than 5 amps,
install a current transformer on the line. Connect the
secondary leads of the CT to the Model 2744terminals (see
TYPICAL APPLICATION on this page). Observe polarity.
Connect the operating supply voltage to the AC input
terminals.
Connect the load control wiring to the appropriate terminals.
For most motor control applications, use the normally open
contact(s), which will close when the current is within the
acceptable range. For alarm applications, use the normally
closed contact(s). Refer to the diagram on this page.
If a manual reset is desired, connect a normally closed
push-button across the RESET terminals (see figure 1).
ADJUSTMENT PROCEDURE
Set the START DELAY adjustment to the required setting. If
the desired current trip level is known, set the CURRENT
adjustment to that point. A slight adjustment up or down may
be necessary to allow for tolerance inaccuracies.
Shows No Power Applied
WARRANTY
The Model 2744Over Current Monitor is warranted to be free
from defects in materials and workmanship for one year.
Should this device fail to operate, we will repair or replace it for
one year 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.
TYPICAL APPLICATION
Over-current; auto reset; ≥≥ 5 amps
figure 1
C
B
A
AC RST
Reset
MANUAL RESET
MODEL 2744 3-Phase Over Current 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 2744.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
August 2003
© 2003 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116

2.19"
1.79"
.23"3.2"
3.65"
.30" x .19"
3.9"
.50" dia.
.95"
1.25"
2.66"
.76"
DESCRIPTION
The Model 1732 AC Current Monitor is a single
setpoint current monitor. It can be used to detect either
over current or under current, depending on whether the
trip point is set above or below the input current. Dual
LED indicators on the front or top of the unit give a clear
visual reference for a fault condition.
The Model 1732 generates it’s operating voltage from
the monitored current line, so no external power supply
is required. A current greater than 25 amps is needed
to energize the internal relay. The maximum current set
point is 150 amps.
The Model 1732 is not frequency sensitive, and can be
used on AC currents from 50 to 400 Hz.
Model 1732
Supply Voltage none required
Input Current Minimum: 25 amps
Maximum: 150 amps
Adjustment Range 25 to 150 amps
Maximum Wire Size 2 AWG
Response Time 100 msec
Contact Rating SPDT 10A at 240VAC resistive
Repeat Accuracy 1% max.
Dead Band Approximately 2%
Operating Temperature -40° to +140° F
Reset Automatic
Terminals 1/4” quick connects
Enclosure Material ABS plastic
Weight 3.5 oz.
SPECIFICATIONS
DIMENSIONS
TYPICAL APPLICATION
-Under current
MODEL 1732
AC Current Monitor
ll Detects Over or Under Current
ll Adjustable Setpoint
ll No External Power Supply
ll Dual LED Condition Indicators
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A290 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
NO NCC
Control
Voltage
SHOWN WITHOUT
APPLIED POWER
STOP
START

INSTALLATION
Mount the Model 1732 in a stable location, observing all
precautions as outlined in the GENERAL SAFETY section
above.
The Model 1732 has 1/4” quick connect terminals for
output connections. The monitored line must be passed
through the CT access hole, located in the side of the
Model 1732. Polarity is not important.
FOR OVER-CURRENT LOAD SHUT-OFF: connect the
load control circuit to the normally closed contact. This
contact will open on over-current, breaking the load circuit.
FOR OVER-CURRENT ALARM CIRCUIT: use the
normally open contact. This will close on over-current,
sounding the alarm.
FOR UNDER-CURRENT SENSING: reverse the
contact connections as stated above (use the normally
open contact for load shutoff, or the normally closed
contact for alarm).
ADJUSTMENT
The Model 1732 is screwdriver adjustable. To adjust the
current trip level, turn the SET POINT AMPS adjustment
clockwise or counter-clockwise until the desired trip
setting is reached.
TROUBLESHOOTING
Should the Model 1732 fail to operate properly, check
that power is present, and that current flow is within the
normal operating range. Check all fuses and verify that
all wiring connections are correct. Should problems
persist, contact the manufacturer.
WARRANTY
The Model 1732 AC Current Monitor is warranted to
be free from defects in materials and workmanship for
one year. Should this device fail to operate, we will
repair or replace it for one year from the date of
purchase. For complete warranty details, see the
Terms and Conditions of Sales page in the front section
of the Time Mark catalog.
Control
Voltage
ALARM
SHOWN WITHOUT
APPLIED POWER
NO CNC
Control
Voltage
SHOWN WITHOUT
APPLIED POWER
STOP START
NO NCC
MODEL 1732 AC Current 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 1732.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A290 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116

SPECIFICATIONS
Model 272-24 272-120
Input Voltage 24VAC 115VAC
Input Voltage Range 20-28 VAC 100-130 VAC
Power Consumption 1.5W
VA Burden 0.5VA per phase
Frequency Range 50 -400 Hz
Current Range 1 -5 amps AC
Max. Input Current 40 amps for 2 seconds
Unbalance Adjustment 2% to 25%
Trip Delay 0.5 to 10 seconds ± 20%
Contact Rating SPDT 10A at 240VAC resistive
Expected Relay Life Mech: 10 million operations
Elec: 100,000 at rated load
Transient Protection 2500V for 10msec
Operating Temperature -40° to +131° F
Humidity Tolerance 0-97% w/o condensation
Enclosure Material ABS plastic
Weight 1 lb. 1.5 oz.
DIMENSIONS
3.0"
5.5"
3.88"
.19 dia. typ.
6.06"
2.08"
.62"
lAdjustable Trip Delay
lAdjustable Unbalance Percentage
lAutomatic Reset
MODEL 272
3-Phase Current
Unbalance Detector
DESCRIPTION
The Model 272 3-Phase Current Unbalance Detector
monitors 3-phase lines to detect an unbalanced current. It can
also monitor three separate single phase lines for equal
current levels.
The percentage of unbalance is adjustable from 2% to 25% by
adjusting a front panel control. An unbalance greater than
this setting energizes the relay. The formula for an unbalance
is:
An adjustable trip delay of 0.5 to 10 seconds is also provided.
For optimum performance, operating currents should be kept
in the 1 to 5 amps range. However, zero current on each
phase is considered to be a balanced condition.
Continuous currents, up to 10 amps per phase, will not
damage the unit, nor will current surges up to 40 amps for 2
seconds. The contacts are automatically reset when the
unbalanced condition is corrected.
A supply voltage of 24 or 120 VAC is required for this unit.
MAX CURRENT - MIN CURRENTMAX CURRENTMAX CURRENT
MAX CURRENTMAX CURRENTMAX CURRENT
100 = %
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A135 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116

INSTALLATION
Mount the Model 272 in a suitable enclosure.
Connect AC operating power to the appropriate
terminals.
Connect the normally closed (N.C.) relay contacts to the
load control wiring.
Connect the 3-phase currents or CT outputs to the
current input terminals marked A B C.
Set the PERCENT UNBALANCE and TRIP DELAY
adjustments to the desired levels, and apply operating
power.
TROUBLESHOOTING
Should the monitor fail to operate properly, check that
all three currents are present and are of the correct
level. Check all fuses and verify that all wiring
connections are correct. Should problems persist,
contact the factory at 800-862-2875 for assistance.
WARRANTY
The Model 272 3-Phase Current Unbalance
Detector is warranted to be free from defects in
materials and workmanship for one year. Should this
device fail to operate, we will repair or replace it for one
year from the date of purchase. Contact the Time Mark
Sales department, Monday through Friday; 8 a.m. to 5
p.m., CST, for further details.
TYPICAL APPLICATION
Control
voltage
Start
Stop
AC
A B C
Motor
O/L's
MODEL 272 3-Phase Current Unbalance Detector
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 272.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A135 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
Shows No Power Applied

DESCRIPTION
The Model 276XR Current Transmitter/Receiver
consists of two identical modules. One module accepts
the input from a standard CT, while the second module
is connected to a current monitor. The transmission
lines between the two modules can be up to 1000 feet
long.
The input module will accept any current input from zero
to 5 amps, while the output module will produce azero
to 5 amp signal. Line loss across 1000 feet is no more
than 6% of the input. The Model 276XR module will
operate with any AC current from 50 to 400 Hz. No
supply voltage is required to operate the transmitter/
receiver link.
DIMENSIONS
SPECIFICATIONS
Model 276XR
Supply voltage none required
Input current Zero to 5 amps
Output current Zero to 5 amps
Frequency range 50-400 Hz
Max. line loss 6%
In/out line 14 ga. wire
Transmission line 22 ga. wire
Transmission line length 1000 feet
Operating temperature -40° to +131° F
Humidity tolerance 0-97% w/o condensation
Mounting 8-pin socket (*order separately)
Weight (each) 4.9 oz.
*order 8-pin socket number 51X120
ll Allows longer transmission lines
from CT to current monitor
ll No external power required
ll Convenient socket mounting
ll Five year unconditional warranty
TYPICAL APPLICATION
234
5
6
7
8
1
1
2
3
4
5678
0-5 amps
0-5 amps To current monitor
From CT
Use 14 ga. Wire minimum
Keep as short as possible.
1000 ft. Using 22 ga.
CONNECTION DIAGRAM
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A335 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
MODEL 276XR
Current
Transmitter/Receiver
3.25"
0.65"
1.95"
1.95"

TROUBLESHOOTING
Should these units fail to operate properly check to
make sure that all wires are connected properly to the
correct pins as shown on the front page.If problems still
persist,contact your local Distributor, or the
manufacturer at 800-862-2875.
WARRANTY
The Model 276XR Current Transmitter/Receiver is
warranted to be free from defects in materials and
workmanship, and is covered by our exclusive 5-year
Unconditional Warranty. If this device fails to
operate, for any reason, we will repair or replace it free,
for five years from the date of purchase. Contact the
Time Mark Sales department, Monday through Friday;
8 a.m. to 5 p.m. CST, for further details.
INSTALLATION
1. Place the two Model 276XR’s next to each other
with one of the models turned 180° so that it is
facing opposite the other.
2. Connect the two transmitter/receivers (CTR’s)
together using 22 gauge wire, as shown in the
diagram on the front of the page.
3. Using 14 gauge wire, connect pins 2 and 7 of one
of the CTR’s to the current transformer (CT) to be
used.
4. Connect the other CTR to your current monitor
with 14 gauge wire.
PIN CONNECTION
TYPICAL APPLICATION
234
5
6
7
8
1
1
2
3
4
5678
0-5 amps
0-5 amps To current monitor
From CT
Use 14 ga. Wire minimum
Keep as short as possible.
1000 ft. Using 22 ga.
CONNECTION DIAGRAM
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
Doc No. 87A335 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
MODEL 276XR Current Transmitter/Receiver
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 276XR.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions

DESCRIPTION
The Model 278 AC Current Transducer is designed to
accept an AC current input, and provide a proportional DC
currentoutput. A linear transformer input is coupled to a
solid-state output amplifier. The Model 278 is powered by
a 115 VAC or 230 VAC source, and is socket-mounted for
ease of use.
Model 278 Current Transducers can be used with
computer and programmable controls to provide:
-Motor and power control
-Supervisory data acquisition
-Load monitoring
-Feedback control
-Energy management
The Model 278 is available in two 4-20 output
configurations. A 0-10 VDC output is available on the
Model 2780.
ll High accuracy, low cost
ll Isolated input and output
ll Socket-mounted, solid-state design
ll Five year unconditional warranty
DIMENSIONS
3.25"
1.95"
1.95"
MODEL 278
AC Current
Transducer
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
12/02
© 2002 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
MODEL C278 C278-230
Supply voltage 115VAC @ 50/60 Hz 230VAC @ 50/60 Hz
Input current 0-5 amps 0-5 amps
Input frequencies 25-400 Hz
Input burden 0.5VA at 120VAC 60 Hz
Output @ rated input 4-20ma 4-20ma
Maximum load 500 ohms 500 ohms
Output accuracy 2% at 77°F
Output ripple 1% max at nominal frequency
Response time 800 msec from 0-99%
Overload withstand 2 times rated output-continuous
10 times rated input-1 second
Dielectric withstand
voltage (isolation) 1500 VRMS input, output, case
Operating temperature -40°to +131°F
Humidity tolerance 0-97% w/o condensation
Enclosure material ABS plastic
Mounting 8-pin socket (*order separately)
Weight 9.5 oz.
Agency Approvals UL Recognized-US/Canada
*Order 8-pin socket number 51X120
SPECIFICATIONS

INSTALLATION
The Model 278 AC Current Transducer requires an 8-
pin mounting socket, such as the Time Mark Model
51X120.
The base connecting diagram on the unit shows the pin
connection numbers for the 115 volt power, the AC
Current input, and the DC Current Out.
Connect the appropriate wiring to the socket as required
(See the Typical Application diagram).
PIN DRAWING
NOTE: When installing the Model 278 Transducer in
areas of high humidity or contamination, it is
recommended that the base area and all exposed metal
parts of the socket be coated liberally with a good
quality silicon grease, such as Dow Corning DC-4 or
DC-4X. Insert the unit into the socket and wipe off
excess grease around the base. This will prevent the
entrance of moisture and other contaminates into the
base and socket areas.
TROUBLESHOOTING
Should the Model 278 AC Current Transducer fail to
operate properly, check that all voltage is present, and
is of the correct voltage level. Check all fuses and
verify that all wiring connections are correct. If
problems persist, contact your local Time Mark
Distributor, or the factory for assistance, Monday-
Friday, 8 a.m. to 5 p.m. CST.
WARRANTY
The Model 278 AC Current Transducer is warranted
to be free from defects in materials and workmanship,
and is covered by our exclusive 5-year Unconditional
Warranty. If this device fails to operate, for any
reason, we will repair or replace it free, for five years
from the date of purchase. Contact the Time Mark
Sales department, Monday through Friday; 8 a.m. to 5
p.m., CST, for further details.
AC
CURRENT
DC
CURRENT
OUT
115
VAC
1
23
4
5
6 7
8
TYPICAL APPLICATION
MODEL 278 AC Current Transducer
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 278.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TIME MARK is a division of
Telephone: Main -[phone]
Sales -[phone]
Fax: [phone]
E-mail: [e-mail]
Internet:http://www.time-mark.com
12/02
© 2002 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
CT-Model 276-xxx
Model 278
2 3
115
VAC DC
Current Out
1
8
6
7