Time Delay Relays
Dedicated - HVAC
T2D120A15M
Lockout
Description
The T2D Series provides protection against short cycling of
compressors and other motors. At the end of each operation, a
lockout delay prevents restarting the compressor or motor until
the delay is completed.
Operation (Lockout with Random Start)
Connection #1:
Upon application of input voltage, a random
start time delay begins. At the end of this time delay, the output
is energized.
Lockout Delay:
Input voltage must be applied prior to and
during timing. When the thermostat or initiate switch opens,
the output de-energizes and the lockout time delay begins. At
the end of the lockout delay, the output is energized allowing
the load to immediately energize when the initiate switch or
thermostat closes.
Connection #2:
Upon application of input voltage and closure
of initiate switch, the time delay begins. At the end of the time
delay, the output is energized and remains energized until power
is removed.
Reset:
Removing power resets the output and the time delay.
Wiring Diagram
L1
N/L2
RANDOM START PLUS LOCKOUT
Features & Benefits
FEATURES
L1
N/L2
BENEFITS
Prevents rapid cycling of compressor
Prevents low voltage starting
Repeat Accuracy + / - 1%
Allows flexiblility for OEM applications
Provides 100 million operations in typical conditions.
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration
and humidity
V = Voltage
L = Load
S1 = Initiate Switch or Thermostat
Lockout delay
Random start delay
Analog circuitry
Compact design
1A steady, 10A
inrush output
Totally solid state and
fully encapsulated
DELAY-ON-MAKE
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64
(AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
© 2018 Littelfuse Protection Relays & Controls
www.littelfuse.com/t2d120a15m
www.littelfuse.com/
Rev: 0-A-000016
1-A-081618
Time Delay Relays
Dedicated - HVAC
T2D120A15M
Specifications
Input
Voltage
Tolerance
AC Line Frequency
Output
Minimum Load Current
Rating
Voltage Drop
Time Delay
Initiate Time
Type
Lockout & Random
Start Delays
Tolerance
Repeat Accuracy
Reset Time
Protection
Dielectric Breakdown
Insulation Resistance
Mechanical
Mounting
Dimensions
Termination
Environmental
Operating/Storage
Temperature
Humidity
Weight
Cooling Anticipator
(24VAC Units Only)
Minimum Cooling Anticipator
120 VAC
±20%
50/60 Hz
40mA
1A steady state, 10A inrush at 60°C
≅
2.5V @ 1A
After timing - 16ms
Analog circuitry
5m fixed
Note: The lockout & random start delays are the
same length.
Function Diagram
RANDOM START
PLUS LOCKOUT
E
L
DELAY-ON-MAKE
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
L
+/-30%
±1% or 20ms, whichever is greater
After timing - ≤ 16ms;
During timing - ≤ 200ms
≥ 2000V RMS terminals to mounting surface
≥ 100 MΩ
Surface mount with one #10 (M5 x 0.8) screw
H
50.8 mm (2”);
W
50.8 mm (2”);
D
30.7 mm (1.21”)
0.25 in. (6.35 mm) male quick connect terminals
-20° to 60°C / -40° to 85°C
95% relative, non-condensing
≅
2.4 oz (68 g)
≥ 3,000 Ω
Disclaimer Notice –
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at
www.littelfuse.com/product-disclaimer.
© 2018 Littelfuse Protection Relays & Controls
www.littelfuse.com/t2d120a15m
www.littelfuse.com/
Rev: 0-A-000016
1-A-081618
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
