Time Mark 2780 Data Sheet

3.25"

1.95"

1.95"

MODEL 2780

TIME MARK is a division of

AC Current
Transducer

 High accuracy, low cost

 Isolated input and output

 Socket-mounted, solid-state design

0 - 10VDC Output

 Five year unconditional warranty

SPECIFICATIONS

DESCRIPTION

The Model 2780 AC Current Transducer is designed
to accept an AC current input, and provide a
proportional DC voltage output. A linear transformer
input is coupled to a solid-state output amplifier. The
Model 2780 is powered by a 115VAC or 230VAC
source, and is socket-mounted for ease of use.

Model 2780 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

DIMENSIONS

MODEL 2780-115 2780-230

Supply voltage 115VAC @ 50/60Hz 230VAC @ 50/60Hz

Input current 0-5 amps

Input frequencies 25-400Hz

Input burden 0.5VA at 120VAC 60Hz

Output @ rated input 0 - 10VDC

Maximum load 500 ohms

Output accuracy 2% at 77°F

Output ripple 1% max at nominal frequency

Response time 800ms from 0-99%

Overload withstand 2 times rated output-continuous

Dielectric withstand
voltage (isolation)

Operating temperature -20° 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

10 times rated input-1 second

1500 VRMS input, output, case

11/2011

© 2011 TIME MARK CORPORATION

MODEL 2780

TIME MARK is a division of

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 2780.

ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.

THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.

Installation Instructions

INSTALLATION

The Model 2780 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 AC power, the AC Current
input, and the DC Voltage Out.

Connect the appropriate wiring to the socket as required
(See the Typical Application diagram).

PIN DRAWING

NOTE: When installing the Model 2780 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 silicone 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.

TYPICAL APPLICATION

TROUBLESHOOTING

Should the Model 2780 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

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