Trumeter 7954, 7957 User Guide

TECHNICAL SPECIFICATIONS

CAT.No.

SUPPLY CHARACTERISTICS

Nominal Supply ( )
Limits
Power Consumption (Max.)

24 - 240 VAC / DC (50 to 60 Hz, 2 Hz)±

-15 % to +10 % of

0.5 VA (@ 24/48 VAC), 4VA (@ 110 to 265 VAC/DC)

RELAY OUTPUT CHARACTERISTICS

Contact Arrangement
Contact Rating
Contact Material
Mechanical Life Expectancy
Electrical Life Expectancy

1 C/O (SPDT)

(Resistive) 8A @ 240 VAC / 24 VDC

AgSnO2

7

2 x 10

1 x 10

5

Switching Frequency (Max.) 1800 Operations / hr. @ rated load
Status Indication on panel

Red LED - Relay ON

FEATURE CHARACTERISTICS

Modes Available

Timing Ranges

Signal Sensing Time
Signal Impedance
Repeat Accuracy

Utilization Category

AC-15

DC-13
Dimension (W X H X D) (in mm)
Weight
Variation in timing due to voltage change
Variation in timing due to temperature change

Temperature Operating

Storage Temperature
Humidity (Non - Condensing)

Mounting
Terminal capacity

1. ON Delay ( )

5. Signal Off Delay ( )

h:m

9:59

20 ms Max. (DC High), 40 ms Max. (AC High), 100 ms Max. (Low)

300 k

± 0.5% of selected range
Rated Voltage (Ue): 125/240 V, Rated Current (Ie) : 3/1.5 A
Rated Voltage (Ue): 125/250 V, Rated Current (Ie) : 0.22/0.1 A

17.5 x 89 x 76
85 g (unpacked)
± 0.2 %
± 1 %

-10° C to + 55° C

-20° C to + 65° C
93 % Rh
Base / DIN-Rail (35 mm Sym.)

2

1.5 mm

2. Cyclic OFF/ON (Sym, Asym) ( )

m:s

9:59

6. Interval ( )

hr

999

99.9

(Pin type lugs)

EMI/EMC

Harmonic Current Emissions

ESD

Radiated Susceptibility
Electrical Fast Transient
Surge

Conducted Susceptibility

Voltage Dips & Interruptions(AC)
Voltage Dips & Interruptions(DC)
Conducted Emission
Radiated Emission

IEC 61000-3-2 Ed. 3.2 (2009-04) Class A
IEC 61000-4-2 Ed. 2.0 (2008-12) Level II
IEC 61000-4-3 Ed. 3.2 (2010-04) Level III
IEC 61000-4-4 Ed. 3.0 (2012-04) Level IV
IEC 61000-4-5 Ed. 2.0 (2005-11) Level IV
IEC 61000-4-6 Ed. 3.0 (2008-10) Level III
IEC 61000-4-11 Ed. 2.0 (2004-03)
IEC 61000-4-29 Ed. 1.0 (2000-08)

CISPR 14-1 Ed. 5.2 (2011-11) Class B
CISPR 14-1 Ed. 5.2 (2011-11) Class B

Safety

Test Voltage Between I/P & O/P
Impulse Voltage Between I/P & O/P
Single Fault

Insulation Resistance
Leakage Current
Degree of Protection
Pollution Degree
Type of Insulation

IEC 60947-5-1 E d. 3.0 (2003-11) 2 kV

IEC 60947-5-1 Ed. 3.0 (2003-11) Level IV
IEC 61010-1 Ed. 3.0 (2010-06) Level IV
UL 508 >50 k
UL 508 <3.5 mA
IP 20 for Terminal; IP-40 for Housing
II
Reinforced

Environmental

Cold Heat
Dry Heat
Vibration
Repetitive Shock
Non-repetitive Shock

IEC 60068-2-1 Ed. 6.0 (2007-03)
IEC 60068-2-2 Ed. 5.0 (2007-07)
IEC 60068-2-6 Ed. 7.0 (2007-12) 5g
IEC 60068-2-27 Ed. 4.0 (2008-02) 40g, 6ms
IEC 60068-2-27 Ed. 4.0 (2008-02) 30g, 15ms

7954

7. Signal OFF/ON ( )

min

999

99.9

3. Cyclic ON/OFF(Sym, Asym) ( )

sec

999

99.9

8. One Shot Output ( )

4. Signal ON/OFF ( )

7954

Digital Timer - 8 Functions

RoHS

CAUTIONS:

1.Always follow instructions stated in this product.

2.Before installation, check to ensure that the
specifications agree with the intended application.

3.Installation to be done by skilled electrician.

4.Automation & Control devices must be properly
installed so that they are protected against any risk

of involuntary actuations.

5.Using of AC 2 wire Type Proximity Sensor:
Please add input relay to prevent false signal sensing
due to current leakage of proximity sensor as below.

P

R

= Relay coil

R

Use relay coil Voltage of the same Voltage using for
Proximity sensor. [Relay coil current should not exceed
the maximum current Specified by Proximity sensor.]

OVERALL DIMENSIONS:

BASE MOUNTING

17.5

C/C 0.001

0.76

0.54

ALL DIMENSIONS ARE IN mm

L

A1

R

B1

N

A2

76.0

LIAR NID

-mm - 53 LACIRTEMMYS

0.98

7954 V2.0

FEATURES:

Available with 8 functions
Wide operating voltage : 24 to 240 VAC / DC
Multi Range : 0.1 s to 999 h
Up/Down counting modes
3Digit LCD for preset Timer and Run Time
Clear LED indication of Relay status
Key lock Function
Conforms to EMI/EMC as per IEC standards
Compact size ( 17.5 mm single width module)

SET ADJ

1.PRESET TIME :The Timer Duration selected by the
user.

2.RUN TIME : In Down counting ( ) mode it indicates
the remaining while in Up counting ( ) mode it indicates
the elapsed time.

3.Up/Down ( ) blinks during the .Timer Duration(T).

UP / DN

LED INDICATION

FOR

RELAY STATUS

THE KEYS:

KEY

SET

OPERATION

Apply Power & Hold Program Mode the key
for >3 sec.

RESULT

OR

ADJ

SET

ADJ

SET

ADJ

SET

Press both >3 sec program after power on

SET

Press in program mode

Press in program mode Edit blinking
parameter

Press for>3 sec. During Timer operation
Reset Timer

Press for>3 sec. during Timer operation
Select, Edit parameter Lock/Unlock
Preset Time

Press during timer operation
Time during Timer operation

Edit Preset

PROGRAMMING INSTRUCTIONS:

Apply power & hold the SET key for >3 sec.OR press
both ADJ & SET key for >3 sec.After power ON.Now
follow the steps given below

DISPLAY

Press ADJ Key to select desired

F

5:39

function (e.g F)

ADJ

SET

ADJ

HM

Confirms function then range

F

5:39

indicator blinks

HM

Press ADJ Key to select range

F

5:39

(e,g.HM range ‘HM’)

HM

RESULT

Confirms range selection. 1st digit

F

5:39

of preset time blinks.( For modes

SET

HM

‘B’ & ‘C’ two preset times ‘on’ & ‘off’
to be set)

Press ADJ key to adjust desired

F

8:39

preset time digit (e.g. from 5 to 8)

HM

ADJ

Press Set to confirm 1st digit

F

8:39

SET

ADJ

selection now 2nd digit blinks

HM

Change with ADJ Key (e, g, from3

F

8:09

to 0)

HM

Confirms 2nd digit selection ,now

F

3rd digit of preset Timeb links.

SET

8:09

HM

Change with ADJ Key (e, g, from9

F

to 6)

ADJ

8:06

HM

Now UP/DOWN Indicator blinks

F

SET

ADJ

SET

8:06

HM

Change with ADJ Key (e, g,from

F

8:06

DOWN to UP)

HM

Confirms counting mode . Program

00.0

F

Ove r. T i me r sta rts w or k ing

8:06

HM

normally.

TIMING DIAGRAMS:

1.ON DELAY [ ]

1.

A1- A2

:

P

B1

:

S

:

R

T

T

t

2.CYCLIC OFF/ ON {OFF START (Sym,Asym)} [ ]

T

T

t

A1- A2

:P

B1

:S

T

T

T

OFF

R

:

T

ON

OFF

ON

T

3.CYCLIC ON/OFF {ON START (Sym, Asym)} [ ]

T

T

t

:

P

A1- A2

B1

S

:

:

R

T

T

T

ON

T

OFF

ON

OFF

T

4.SIGNAL ON/OFF [ ]

T T

A1- A2A1- A2

:

P

B1

:

S

:

R

T

TT T

T

T

T t

T

t

T : PRESET TIME

T : PERIOD < T

5.SIGNAL OFF DELAY [ ]

A1- A2

:

P

B1

:

S

:

R

6.INTERVAL [ ]

P

A1- A2

P

:

B1

S

:

R

:

T

T

7.SIGNAL OFF/ON [ ]

A1- A2

:

P

B1

:

S

:

R

T

T T

T

8. ONE SHOT OUTPUT [ ]

A1- A2

:

P

B1

:

S

:

R

T : PRESET TIME

Timing Diagrams

FUNCTIONAL DESCRIPTION:

T

1

SEC.

T : PERIOD < T

1.ON DELAY [ ]

P : POWER

T

P : POWER

SIGNALS :

T

T t

T

SIGNALS :

t

T

T

T

R : RELAY

t

T

t

T T

t T

t

t

t

R : RELAY

5.SIGNAL OFF DELAY [ ]

Output relay become on when signal (S) is applied.

t

The Timer duration (S) is removed .At the end of timer
Duration (T) the output relay goes OFF. Signal (S) ,if
Applied during the timer duration (S) will re -trigger
The timer and the total duration will be extended.

6.INTERVAL [ ]

T

When Signal (S) is applied ,The Timer Starts and the
Output trelay is energized .The output relay be comes
OFF a t t h e e n d o f t i m er dur a t ion ( T ) .

7.SIGNAL OFF/ON [ ]

t

When Signal (s) is applied or removed ,The relay
changes . Its state after timer duration (T ) (Refer
Nots : 2)

8.ONE SHOT OUTPUT [ ]

When Signal (s) is applied ,the timer duration (T)
Starts. At the end of Timer duration (T), the relay gets

T

energized for approximately 1 sec.(Refer Note:2)

1.For power -on operation the terminal B1 and A1
must.

2.In case of all modes except mode G a change in
Signal (s) status during the Timing Duration (T),does
not affect output status but resets timing and

re-triggers timing.
The Timer starts when both power (p) and signal (s)
are applied .The relay is energized at the end of preset
Timer (T) and remains on till power is removed.

2.CYCLIC OFF/ ON {OFF START (Sym,Asym)} [ ]

3.Output de-energises when device enters PROGRAM

MODE and starts new cycle after coming out of.

PROGRAM MODE.

4.Loads which have current requirement 1mA,con only

be used as Optional Load . For e.g Contactor coil
T-ON and T-OFF can be same or different .The relay

,AC Relay Coil, etc,
keeps on changing its status till the power is removed.

T

3.CYCLIC ON/OFF {ON START (Sym, Asym)} [ ]

This function is quite similar to the function “ " but

CONNECTIONS:

Supply

Connection

Relay

Connection

15

Initially he relay is ON for period T-ON after the power
is applied.

tT

4.SIGNAL ON/OFF [ ]

The output relay is turned ON for preset Time (T) When

24 -240 V

AC/DC

OPTIONAL
LOAD > 1 mA

18

16

8A, 240 VAC/24 VDC

ever the signal (S)is applied or removed .(Refer Note

T

:2 )

t

Note:

Product innovation being a continuous process.

We reserve the right to alter specification without any

prior notice.

7954 V2.0

TECHNICAL SPECIFICATIONS

Cat. No.:
SUPPLY CHARACTERISTICS

Nominal Supply ( )

Supply Variation

Supply Frequency
Power Consumption (Max.)

24 - 240 VAC / DC

-15 % to + 10 % of

50 to 60 Hz, +/- 2Hz

0.5 VA (@ 24/48 VAC), 4VA (@ 110 to 265 VAC/DC)

RELAY OUTPUT CHARACTERISTICS

Contact Arrangement
Contact Rating
Contact Material
Mechanical Life Expectancy
Electrical Life Expectancy
Switching Frequency (Max.) 1800 Operations / h @ rated load

1 C/O (SPDT)
8A (Res.) @ 240 VAC / 24 VDC
Ag Alloy

7

2 x 10

1 x 10

5

Status Indication on panel Red LED - Relay ON

FEATURE CHARACTERISTICS

Functions Available
Timing Ranges

Signal Sensing Time
Signal Impedance
Repeat Accuracy
Variation in timing due to voltage change
Variation in timing due to temperature change

Operating Temperature

Storage Temperature

Humidity (Non-Condensing)

Mounting

Refer “Timing diagrams of Functions”
h:m

9:59 9:59

m:s

20 ms Max. (DC High), 40 ms Max. (AC High), 100 ms Max. (Low)
300 k
+/- 0.5 % of selected range
+/- 0.2%

+/- 1%

-10°C to + 55°C

-20°C to + 65°C
93% (Rh)

Base / Din - Rail (35 mm Sym.)
85 g (approx.)Weight (Unpacked)

Initiate Time
Reset Time

AC-15

Utilization Category

DC-13

Dimension (W X H X D) in mm

40 ms
< 200 ms

Rated Voltage (Ue):120/240 V:,
Rated Current (le):3.0/1.5 A

Rated Voltage (Ue):125/250 V:,
Rated Current (le):0.22/0.1 A

17.5 X 89 X 76

EMI/EMC

Harmonic Current Emissions

ESD

Radiated Susceptibility
Electrical Fast Transient

Surge

Conducted Susceptibility

Voltage Dips & Interruptions (AC)
Voltage Dips & Interruptions (DC)
Conducted Emission
Radiated Emission

IEC 61000-3-2 Ed. 3.2 (2009-04) Class A
IEC 61000-4-2 Ed. 2.0 (2008-12) Level II
IEC 61000-4-3 Ed. 3.2 (2010-04) Level III
IEC 61000-4-4 Ed. 3.0 (2012-04) Level IV
IEC 61000-4-5 Ed. 2.0 (2005-11) Level IV
IEC 61000-4-6 Ed. 3.0 (2008-10) Level III
IEC 61000-4-11 Ed. 2.0 (2004-03)
IEC 61000-4-29 Ed. 1.0 (2000-08)
CISPR 14-1 Ed. 5.2

CISPR 14-1 Ed. 5.2 (2011-11) Class B

Safety

Test Voltage Between I/P & O/P
Impulse Voltage Between I/P & O/P
Single Fault

Insulation Resistance
Leakage Current
Degree of Protection
Pollution Degree
Type of Insulation

IEC 60947-5-1 Ed. 3.0 (2003-11) 2 kV
IEC 60947-5-1

Ed.
IEC 61010-1 Ed. 3.0 (2010-06)
UL 508 >50 k
UL 508
IP 20 for Terminal; IP 40 for Housing
II
Reinforced

Environmental

Cold Heat
Dry Heat
Vibration
Repetitive Shock
Non-repetitive Shock

IEC 60068-2-1 Ed. 6.0 (2007-03)
IEC 60068-2-2 Ed. 5.0 (2007-07)
IEC 60068-2-6 Ed. 7.0 (2007-12) 5 g
IEC 60068-2-27 Ed. 4.0 (2008-02) 40 g, 6 ms
IEC 60068-2-27 Ed. 4.0 (2008-02) 30 g, 15 ms

7957

1h

999

99.9

3.0 (2003-11) Level IV

<3.5mA

min
999

99.9

(2011-11) Class B

1s
999

99.9

FRONT FACIAL:

MODE OR

SET ADJ

1. PRESET TIME: The Timer Duration selected by the
user.

2. RUN TIME: In Down counting ( ) mode it indicates
the remaining while in Up counting ( ) mode indicates
the elapsed time.

3.

Default Mode: Down counting ( )

4.Up/Down ( ) blinks during the Timer Duration (T)

UP / DN

LED INDICATION

FOR

RELAY STATUS

OVERALL DIMENSIONS:

BASE MOUNTING

17.5

C/C 0.001

0.76

0.54

ALL DIMENSIONS ARE IN mm

TERMINAL DETAILS:

3.5 mm

AWG

Wire Strip Length = 6.5 mm. Use Cu wire of 75°C only.

CURRENT (A)

AWG
14

8

16

6.4

18

4.8
20

3.2

1.6

22

The timers shall be placed in an enclosure that is
minimum 200% of the size of the timer in the end use
application.

76.0

0.98

0.4 N.m (3.5 Lb.in)
Terminal screw - M2.5

1 x 0.3 to 2.5 mm

2

Solid Wire

22 to 14

LIAR NID

-mm - 53 LACIRTEMMYS

7957

Digital Timer - 18 Functions

RoHS

FEATURES:

1. Compact size

2. Available with 18 functions

3. Wide timing range from 0.1 sec - 999 h
Wide operating voltage : 24 to 240 VAC / DC

4.

5. 3-Digit LCD Display

6. Time & Mode setting through easy key operations.

7. Up/Down Counting Modes

8. Clear LED indication for Relay Status

9. Key Lock Function

CAUTIONS:

1.Always follow instructions stated in this product.

2.Before installation, check to ensure that the
specifications agree with the intended application.

3.Installation to be done by skilled electrician.

4.Automation & Control devices must be properly
installed so that they are protected against any risk

of involuntary actuations.

5.Using of AC 2 wire Type Proximity Sensor:
Please add input relay to prevent false signal sensing
due to current leakage of proximity sensor as below.

P

R

= Relay coil

R

Use relay coil Voltage of the same Voltage using for
Proximity sensor. [Relay coil current should not exceed
the maximum current Specified by Proximity sensor.]

CONNECTIONS DIAGRAM :

Supply

Connection

24 -240 V
AC/DC

OPTIONAL

LOAD > 1 mA

L

A1

R

B1

N

A2

Relay

Connection

15

18

16

8A, 240 V AC

24V DC

7957 V2.0

KEY FUNCTIONS:

1. Used as ENTER key to jump to next setting
& save the settings edited.

2. RUN MODE RESTART: Press SET key

SET

continuous for >3 sec during RUN Mode to
restart the timing operation.

3. Press SET key once to edit PRESET time in
RUN mode

1. Used to edit the modes & timing ranges.

2. Keypad LOCK/UN-LOCK: Press ADJ key

ADJ

for >3 sec during RUN time mode.

Timing Diagrams of Functions:

1.ON DELAY [ ]0

2.CYCLIC OFF/ON {OFF Start,
(Sym, Asym)} [1]

13.LEADING EDGE IMPULSE1 [Χ]

14.LEADING EDGE IMPULSE 2 [∆]

15.TRAILING EDGE IMPULSE 1 [Ε]

7. ACCUMULATIVE IMPULSE ON SIGNAL [6]

When supply is ON, R energizes. When switch B1 is
closed timing is suspended and remains suspended till
switch B1 is opened again. Interrupting supply resets
timer.

8.SIGNAL ON DELAY [7]

Permanent supply required. Timing starts when switch
B1 is closed. R energizes at end of timing period and
de-energizes when B1 is opened.

ADJ

1. Used to enter in program edit mode

SET

after power ON.

Programming Instructions

Apply power & hold the set key for >3 s.
OR
Press both ADJ & SET key for >3 s after power ON.
Now follow the steps given below;

KEY

DISPLAY RESULT

5:39

F

HM

ADJ

F5:39

HM

SET

F5:39

HM

ADJ

F5:39

HM

SET

Press ADJ Key to select desired
function (e. g. F)

Confirms function then range
indicator blinks

Press ADJ Key to select range
(e. g. HM range ‘HM’)

Confirms range selection. 1st digit
of preset time blinks. (For modes
‘1’, ’2’ & ‘G’ two preset times ‘On’ &
‘Off’ to be set)

Press ADJ key to adjust desired

F8:39

preset time digit (e. g. from 5 to 8)

HM

ADJ

Press Set to confirm 1st digit

F8:39

selection, now 2nd digit blinks

HM

SET

Change with ADJ Key (e. G. from 3

F

8:09

to 0)

HM

ADJ

Confirms 2nd digit selection, now

F8:09

3rd digit of preset Time blinks.

HM

SET

Change with ADJ Key (e. g. from 9

F8:06

to 6)

HM

ADJ

Now UP/DOWN Indicator blinks

F8:06

HM

SET

Change with ADJ Key (e. g. from

F8:06

DOWN to UP)

HM

ADJ

00.0

Confirms counting mode. Program

F8:06

Over.

HM

SET

Timer starts working normally.

3.CYCLIC ON/OFF {ON start, (Sym, Asym)} [2]

4.IMPULSE ON ENERGIZING [3]

5.ACCUMULATIVE DELAY ON SIGNAL [4]

6.ACCUMULATIVE DELAY ON INVERTED
SIGNAL [5]

7.ACCUMULATIVE IMPULSE ON SIGNAL [6]

8.SIGNAL ON DELAY [7]

9.INVERTED SIGNAL ON DELAY [8]

10.SIGNAL OFF DELAY [9]

11.IMPULSE ON/OFF [Α]

12.SIGNAL OFF/ON- TYPE 1 [Β]

16.TRAILING EDGE IMPULSE 2 [Φ]

17.DELAYED IMPULSE [Γ]

18. INVERTED SIGNAL ON DELAY-TYPE 2 [Η]

H

Functional Description

1.ON DELAY [0]

Timing commences when supply is present. R
energizes at the end of the timing period.

2.CYCLIC OFF/ON {OFF Start, (Sym, Asym)} [1]

T-ON and T-OFF can be same or different. The relay
(R) keeps on changing its status until power is
removed.

3.CYCLIC ON/OFF {On Start, (Sym, Asym)} [2]

This function is quite similar to the function ‘1’ but
initially the relay (R) is ON for period T-ON after the
power is applied.

4.IMPULSE ON ENERGIZING [3]

After power ON, R energizes and timing starts. R de­energizes after timing is over.

5.ACCUMULATIVE DELAY ON SIGNAL [4]

Time commences as supply is present and switch B1 is
open. Closing switch B1 pauses timing. Timing
resumes when switch B1 is opened again. R energizes
at the end of timing.

6. ACCUMULATIVE DELAY ON INVERTED
SIGNAL [5]

Time commences as supply is present and switch B1 is
closed. Opening switch B1 pauses timing. Timing
resumes when switch B1 is closed again. R energizes
at end of timing.

9.INVERTED SIGNAL ON DELAY [8]

Timing will commence when supply is present and
switch B1 is open. R energizes after timing. If B1 is
closed during timing period, timing resets to the
beginning of cycle.

10.SIGNAL OFF DELAY [9]

Permanent supply is required. R energizes when
switch B1 is closed. Timing commences after S is
op ene d an d t hen the re lay de - en er giz es .

11.IMPULSE ON/OFF [α]

Permanent supply is required. R energizes for the
timing period when B1 is opened or closed. When
timing commences, changing state of B1 does not
affect R but resets timer.

12.SIGNAL OFF/ON [Β]

When switch B1 is closed or opened for preset time ’T,’
the relay changes its state after time duration T.

13.LEADING EDGE IMPULSE1 [χ]

A permanent supply is needed. When B1 is closed,
output relay energizes until timing irrespective of any
further action of B1.

14.LEADING EDGE IMPULSE 2 [∆]

Permanent supply is required. when switch B1 is
closed, and remains closed output relay energizes until
timing is over. If B1 is opened during timing, R resets.

15.TRAILING EDGE IMPULSE 1 [ε]

Permanent supply required. when B1 is opened, R
energizes and de-energizes when timing is over. If B1
is closed during timing R resets

.

16.TRAILING EDGE IMPULSE 2 [φ]

Permanent supply is required. When switch B1 is
opened, R energizes and will de-energize when timing
is over. If B1 is pulsed during timing period it Will have
no effect on R.

17.DELAYED IMPULSE [Γ]

when switch B1 is closed, TOFF starts. Relay energizes
at the end of T

OFF period. Then, TON starts

irrespective of signal level and relay de-energize at
the end of T

ON period.

18. INVERTED SIGNAL ON DELAY-TYPE 2 [Η]

Timing starts only upon signal ‘B1’ transition high to
low. During timing or after completion of Time (i.e.
relay on), any signal transition is ignored. To reset the
timer supply has to be interrupted.

7957 V2.0