Trumeter 7957 Manual

TECHNICAL SPECIFICATIONS

Cat. No.:

SUPPLY CHARACTERISTICS

Nominal Supply ( )
Supply Variation
Supply Frequency
Power Consumption (Max.)

RELAY OUTPUT CHARACTERISTICS

Contact Arrangement
Contact Rating
Contact Material
Mechanical Life Expectancy
Electrical Life Expectancy
Switching Frequency (Max.)
Status Indication on panel

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
Weight (Unpacked)
Initiate Time
Reset Time
AC-15
Utilization Category
DC-13
Dimension (W X H X D) in mm

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

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
Environmental
Cold Heat
Dry Heat
Vibration
Repetitive Shock
Non-repetitive Shock
7957
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)
1 C/O
8A (Res.) @ 240 VAC / 24 VDC
Ag Alloy
2 x 10 7
5
1 x 10
1800 Operations / h @ rated load
Red LED - Relay ON
Refer "Timing diagrams of Functions"
h:m m:s 1h min
9:59 9:59 999 999
99.9 99.9
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.)
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
IEC 61000-3-2 Ed. 3.0 (2005-11) Class A
IEC 61000-4-2 Ed. 1.2 (2001-04) Level II
IEC 61000-4-3 Ed. 3.0 (2006-02) Level III
IEC 61000-4-4 Ed. 2.0 (2004-07) Level IV
IEC 61000-4-5 Ed. 2.0 (2005-11) Level IV
IEC 61000-4-6 Ed. 2.2 (2006-05) Level III
IEC 61000-4-11 Ed. 2.0 (2004-03)
IEC 61000-4-29 Ed. 1.0 (2000-08)
CISPR 14-1 Ed. 5.0 (2005-11) Class B
CISPR 14-1 Ed. 5.0 (2005-11) Class B
IEC 60947-5-1 Ed. 3.0 (2003-11) 2 kV
IEC 60947-5-1 Ed. 3.0 (2003-11) Level IV
IEC 61010-1 Ed. 2.0 (2001-02)
UL 508 Ed. 17 (1999-01) >2000 M
UL 508 Ed. 17 (1999-01) <3.5mA
IP 20 for Terminal; IP 40 for Housing
II
Reinforced
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
FRONT FACIAL:
MODE OR
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 ( )
1s
4.Up/Down ( ) blinks during the Timer Duration (T)
999
99.9

OVERALL DIMENSIONS:

0.4 N.m (3.5 Lb.in)
Terminal screw - M2.5
3.5 mm
1 x 0.3 to 2.5 mm
Solid Wire
AWG 22 to 14
Wire Strip Length = 6.5 mm. Use Cu wire of 75°C only.
AWG CURRENT (A)
14 8
16 6.4
18 4.8
20 3.2
22 1.6
The timers shall be placed in an enclosure that is
minimum 200% of the size of the timer in the end use
application.
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
4. Wide operating voltage : 24 to 240 VAC / DC
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
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
2
R
R
R = Relay coil
N
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 :

24 -240 V
AC/DC
8A, 240 V AC
OPTIONAL
LOAD > 1 mA
application.
L
A1
B1
A2
15
18
16
24V DC
VLL012-00