TECSYSTEM T154 Instruction Manual

INSTRUCTION MANUAL

TECSYSTEMS S r. I.

Exclusive Canadian Distributor
EL Switchgear & Control Inc
Ph: 1 800 463 1275 Fax [phone]
E Mail [e-mail]
February 19, 2007

T154

P4 V3 1. 2C

1

R3 T154 Table of contents

Introduction...........................................................................................3

Mounting...............................................................................................3

Dimensions ...........................................................................................3

Controls.................................................................................................4

Screen Displays ...................................................................................4

Screen Messages...................................................................................5

Light Test..............................................................................................5

Control Power.......................................................................................5

Wiring...................................................................................................6

Inputs ....................................................................................................7

Outputs..................................................................................................7

Programming ........................................................................................8

Pictorial.................................................................................................10

Technical Specifications .......................................................................11

Testing ..................................................................................................12

Warranty...............................................................................................12

Troubleshooting....................................................................................13

Options..................................................................................................14

Approvals..............................................................................................14

T154 Instruction Manual P4 V3 1.2C
February 19, 2007

Exclusive Canadian Distributor
EL Switchgear & Control Inc
Ph: 1 800 463 1275 Fax [phone]
E Mail [e-mail]
February 19, 2007

2

Introduction The T154 Temperature Monitor will monitor and control up to four, three-

wire RTD inputs. All input channels may be user programmed for two
separate outputs with a range of 0 to 240°C (32 to 464°F). The set points are
common to all channels. The unit is microprocessor based which offers
application flexibility, and easy integration to a variety of applications
including electric motors; electric and diesel generators; all types of
transformers; electric cables; and industrial and chemical processes. ANSI 49
covers the thermal protection provided.
The unit is intended for semi-flush mounting with hardware provided.
Installation and set-up is simple using the universal power supply 24 to 240V
AC or DC and functional user controls and display.

Mounting T154 is designed for semi-flush panel mounting. Mounting hardware is

included with each unit. The panel cutout dimension is 92 x 92mm (3.62 in. x

3.62 in.).

Dimensions Ref Figure 1

96 x 96 x 127 mm (3.78 x 3.78 x 5.51 in.)

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Figure 1

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Controls All functional controls and displays are located on the front of the unit. The

unit has six input keys, two having dual functions. These are PRG/SET and
ENT/RESET. Keys may be categorized as, programming, screen display, and
test.

Programming keys are located at the bottom of the unit and may be identified

by the blue type. These are PRG, ENT, UP (symbol) DOWN (symbol). The
screen display may be changed by the DISPLAY MODE key located to the
right side of the display, identified by the yellow type. The TEST key is
located beside the display mode key, identified by white type. When the test
provision is enabled the SET and RESET keys are activated, with the PRG
and ENT keys disabled.

Screen Displays EACH ACTIVE CHANNEL HAS FOUR ASSOCIATED LED’S,

INDICATING STATUS. TRIP, ALARM, FAN, OR FAULT, THE LED
COLOURS ARE INTERPRETED AS FOLLOWS
Green

Displays the active channel 1-2-3 or 4

Yellow

-The associated channel has exceeded the alarm trip set point, and the alarm
output relay has changed state

-The fan relay has been ener gized

Red

-The associated channel has exceeded the trip set point and the trip output
relay has changed state.

-Indication of a fault condition

All messages and operating parameters are displayed on the screen. The
DISPLAY MODE key controls the operating mode of the screen display
allowing any one of four modes to be selected: scan, auto , man, or Tmax.
An illuminated yellow LED at the top of the display indicates the active mode
and pressing the DISPLAY MODE key toggles the four different modes. The
different modes display the following information:

Scan

Each channel is scanned for approximately three seconds during which the
actual temperature of that channel is displayed

Auto

All active channels are scanned, but only the temperature of the hottest
channel is displayed on the screen. This mode does not affect protection.

Man

Each channel may be viewed manually by pressing the UP or DOWN key.
The information displayed on the screen will be that of the channel whose
green LED is lit. All active channels are still scanned but only the temperature
of the selected channel is displayed. This mode does not affect protection.

Tmax

This value is logged in memory and is the maximum temperature recorded on
any active input channel. The temperature value is shown and the channel is
identified.

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4

Screen Messages The main LED screen displays a variety of messages some of which only

appear during programming or as a result of component or unit failure. During
the course of normal operation the following screen display indi cates a fault
condition:

• FOC: Fault open circuit - RTD input to one or more channels has open

circuited. LED illumination is provided showing fault relay indication,
and the affected channel is identified

• FCD: Fault sensor reading - RTD signal is erroneous. This is a

programmable feature that is enabled by the user. Sensitivity is user
selectable from 1(low) to 30 (high) This determines response time
The controller decides if the signal input from the RTD is accurate. The
fault relay will trip if a signal input is determined to be wrong. The sensor
must be replaced. To reset the fault relay push RESET until RST appears
on the main display

• FCC: Fault short circuit - RTD is short -circuited. The RTD has failed or the

RTD selection and the unit are not compati ble. The cause is the result of
lower resistance across the input than the unit is calibrated for. Indication
of this problem is provided by fault relay LED indication. The main
display will show FCC and a channel is identified If all alarm and trip
LED’s illuminate with fault indication, the probability is, the RTD’s are

not compatible with the unit
All other messages pertain to program or test functions, which are described
under programming or test.

Light Test This test is conducted automatically after completion of programming or

viewing programmed information. It is intended to provide visual indication
of all illuminated LED’s and their operation.
It is advisable to carry out this test on a regular basis to ensure all lamps are
functioning normally. Pressing the TEST key at any time allows the user to
test all lamps.
If any lamp is not functioning the unit must be returned for repair.

Control Power The T154 has a universal power supply. It can be supplied with 24 to 240V

AC or DC without respect to polarities.
The ground cable must be fixed to terminal # 41

ATTENTION: The unit may be damaged by over voltage
when power is supplied directly from the secondary of the
transformer it is monitoring. This may occur when the 240V is
obtained directly from the secondary winding and there are
fixed capacitors online. Use a control circuit transformer, with
a secondary voltage of 24 to 120V AC or DC to avoid
damage.

ATTENTION: Disconnect the power supply to the T154
when conducting insulation testing with an AC or DC HiPot.

Exclusive Canadian Distributor
EL Switchgear & Control Inc
Ph: 1 800 463 1275 Fax [phone]
E Mail [e-mail]
February 19, 2007

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