SERIES THLC
ENGINEERING DATA SHEET
RAILWAY TIME DELAY RELAY
PROGRAMMABLE TIMER WITH
SOLID STATE OUTPUT
Repeat cycle timer in a hermetically sealed package
Time delay programmable by wiring
Output characteristics
Supply
1 solid state output
Direct current
PRINCIPLE TECHNICAL CHARACTERISTICS
Contact rating
Weight
0.01 to 0.25 Amp at
nominal voltage
< 80 grams
Dimensions of can without hardware
26mm x 25.7mm x 26mm
max
Tin plated, hermetically sealed metal can.
APPLICATION NOTE:
007
APPLICABLE SOCKET:
SF402CE40E
SF402-1F
GENERAL CHARACTERISTICS
Operating temperature
Dielectric strength at sea level
All terminals to ground
Initial insulation resistance at 500 Vdc
Sinusoidal vibration
Shock
Timing accuracy over termperature range
Protection against reverse polarity
1500 Vrms / 50 Hz
>1000 M
Ω
10 G / 10 to 2000 Hz
30 G / 11 ± 1 ms
± 10%
yes
-25°C to +70°C
Featuring
LEACH
©
power and control solutions
www.esterline.com
AMERICAS
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622
.
.
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
EUROPE
2 Rue Goethe
57430 Sarralbe
France
.
.
Tel: (33) 3 87 97 31 01
Fax: (33) 3 87 97 96 86
ASIA
Units 602-603 6/F Lakeside 1
No.8 Science Park West Avenue
Phase Two, Hong Kong Science Park
Pak Shek Kok, Tai Po, N.T.
Hong Kong
Tel: (852) 2 191 3830
Fax: (852) 2 389 5803
Data sheets are for initial product selection and comparison. Contact Esterline Power Systems prior to choosing a component.
Date of issue: 4/06
- 62 -
Page 1 of 4
TIMING DIAGRAM
REPEAT CYCLE TIMER
SERIES THLC
OPERATING VOLTAGE
T
T
OUTPUT
ENERGIZED
DE-ENERGIZED
RECYCLE TIME:
T1=100 ms min, T2=150 ms min, T=TEMPORISATION
T
T
T2
T1
MAXIMUM POWER LOSS TIME:
COMMAND
TPE=2 ms ±.2mS
OUTPUT
Dimensions in mm
Tolerances unless otherwise specified ±0.25mm
NEGATIVE POLARITY, CONTROL
VOLTAGE AND POWER SUPPLY
CONTROL VOLTAGE (+) AND
POWER SUPPLY
TIMING RANGE
1
2
3
Dimensions in mm
Tolerances unless otherwise specified ±0.25mm
Nominal operating voltage (Un)
Minimum operating voltage
Maximum operating voltage
Maximum current draw at Un
24 Vdc
16.8 Vdc
33 Vdc
20 mA
Date of issue: 4/06
- 71 -
-
D
C
TIMING DELAY
+
+
-
Load
B
4
A
TERMINAL SIDE VIEW
48 Vdc
40 Vdc
60 Vdc
20 mA
72 Vdc
50 Vdc
90 Vdc
20 mA
110 Vdc
77 Vdc
137 Vdc
20 mA
Page 2 of 4
MOUNTING STYLES
B : ISO M3
C : UNC
4
ñ0.5
SERIES THLC
A
25.7
MAX
1
D
M3
or 4.40 UNC 2 B
4
ñ0.15
4
ñ0.15
26
MAX
23.8
MAX
15.9
3.8
Contrasting beads
26 MAX
35.7
ñ0.15
44 MAX
35.5
36.7
44 MAX
K MOUNTING MAY BE USED WITH 1 OR 8
TERMINAL STYLE; IT INCLUDES THE DELIVERY
OF 10124 ISOLATION SPACER PAD
0°
60°
120°
180°
240°
ñ0.15
300°
Code U Code V Code W Code X Code Y Code Z
35.7
3.8
15.9
Isolation pad
10124
5.4
Cl‚3
J
K
Cl‚1
Cl‚2
1
23.8
MAX
Ø6
ñ0.1
M3
4
ñ0.15
Silicone
gasket shore
A 15-30
GOLD PLATED PINS
15.9
5
-0.1
+0
H
M3
Dimensions in mm
Tolerances unless otherwise specified ±0.25mm
35.5
36.7
44 MAX
35.7
ñ0.15
6.9
ñ0.1
1.3
ñ0.1
9
ñ0.1
44 MAX
SCHEMATIC DIAGRAM
NEGATIVE POLARITY, CONTROL
VOLTAGE AND POWER SUPPLY
CONTROL VOLTAGE (+) AND
POWER SUPPLY
TIMING RANGE
1
2
3
TERMINAL TYPES
Ø1.57
+0.05
-0.03
+0.05
-0.03
Ø1.57
Ø1.57
ñ0.03
1
2
Silicone
gasket shore
A 15-30
1.3
ñ0.1
6.9
ñ0.2
Ø2
7.9
MAX
TIN PLATED PINS
SOLDER HOOKS
Date of issue: 4/06
- 64 -
-
D
C
TIMING DELAY
+
+
-
Load
B
4
A
TERMINAL SIDE VIEW
5.08
5.08
4
Isolation pad
10124
+0.5
8
3.6
+0
1.27
GOLD PLATED PINS
SHORT TIN PLATED PINS
Page 3 of 4
NUMBERING SYSTEM
SERIES THLC
THLC 72
H
4
WWZ
Basic series designation__________________________|
|
|
|
|
Operating voltage (24,48,72,110)______________________|
|
|
|
1-Mounting Styles (A,B,C,D,J,K,H)_________________________|
|
|
2-Terminal Types(1,2,4,8)_____________________________________|
|
3-Coding keys for H mounting style_________________________________|
NOTES
1.
2.
3.
4.
Relays with B, D mounting styles and terminal type 4 are compatible with socket SF402CE40E.
Relays with H mounting style are compatible with socket SF402-1F.
Isolation spacer pads for PCB mounting available on request.
For other mounting styles or terminal types or coding, please contact factory.
CODING CHART FOR H MOUNTING
Operating voltage
Coding
24 V
WUZ
48 V
WVZ
72 V
WWZ
110 V
WXZ
TIMING PROGRAMMATION
Timing range
1
a1-b1
connected
Terminals to
connect
b3-a2
b3-a3
b3-a4
b3-b4
b3-c4
b3-c3
b3-c2
b3-b2
Timing delay
0.25 s
0.5 s
1s
2s
4s
8s
16 s
32 s
Timing range
2
a1-b1
non connected
Terminals to
connect
b3-a2
b3-a3
b3-a4
b3-b4
b3-c4
b3-c3
b3-c2
b3-b2
Timing delay
0.25 mn
0.5 mn
1 mn
2 mn
4 mn
8 mn
16 mn
32 mn
Time delay options from 0.25 to
63.75 seconds
Intermediate time delay may be obtained by multiple wiring.
Example: for 12 s = 8 s + 4 s, connect C3 and C4 to B3.
Time delay options from 0.25 to
63.75 seconds
Date of issue: 4/06
- 65 -
Page 4 of 4
Application notes
SUPPRESSOR DEVICES FOR RELAY COILS
N°007
The inductive nature of relay coils allows them to create magnetic forces which are converted to mechanical movements to
operate contact systems. When voltage is applied to a coil, the resulting current generates a magnetic flux, creating
mechanical work. Upon deenergizing the coil, the collapasing magnetic field induces a reverse voltage (also known as back
EMF) which tends to maintain current flow in the coil. The induced voltage level mainly depends on the duration of the
deenergization. The faster the switch-off, the higher the induced voltage.
All coil suppression networks are based on a reduction of speed of current decay. This reduction may also slow down the
opening of contacts, adversly effecting contact life and reliability. Therefore, it is very important to have a clear understanding
of these phenomena when designing a coil suppression circuitry.
Typical coil characteristics
On the graph below, the upper record shows the contacts state. (High level NO contacts closed, low level NC contacts
closed, intermediate state contact transfer). The lower record shows the voltage across the coil when the current is switched
off by another relay contact.
The surge voltage is limited to -300V by the arc generated across contact poles. Discharge duration is about 200
mircoseconds after which the current change does not generate sufficient voltage. The voltage decreases to the point where
the contacts start to move, at this time, the voltage increases due to the energy contained in the NO contact springs. The
voltage decreases again during transfer, and increases once more when the magnetic circuit is closed on permanent
magnet.
Operating times are as follows:
Time to start the movement 1.5ms
Total motion time 2.3ms
Transfer time 1.4ms
Contact State
Date of issue: 6/00
-8-
Page 1 of 4
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