Definition:
Time Delay is defined as the controlled period between the functioning of two events. A Time Delay relay is a combination
of an electromechanical output relay and a control circuit. The control circuit is comprised of solid state components and
timing circuits that control operation of the relay and timing range. Typical time delay functions include On-Delay, Repeat
cycle (starting off), Interval, Off-Delay, Retriggerable One Shot, Repeat cycle (starting on), Pulse Generator, One Shot,
On/Off Delay, and Memory Latch. Each function is explained in the table below. Time delay relays have a broad
choice of timing ranges from less than one second to many days. There are many choices of timing adjustments from
calibrated external knobs, DIP switches, thumbwheel switches, or recessed potentiometer. The output contacts on the
electromechanical output relay are direct wired to the output terminals. The contact load ratings are specified for each
specific type of time delay relay.
Understanding the differences between all the functions available in time delay relays can sometimes be a daunting task.
When designing circuits using time delay relays questions such as:
“What initiates a time delay relay?”
“Does the timing start with the application or release of voltage?”
“When does the output relay come on?”
must be asked.
Time delay relays are simply control relays with a time delay built in. Their purpose is to control an event based on time.
The difference between relays and time delay relays is when the output contacts open & close: on a control relay, it
happens when voltage is applied and removed from the coil; on time delay relays, the contacts will open or close before
or after a pre-selected, timed interval.
Typically, time delay relays are initiated or triggered by one of two methods:
• application of input voltage (On Delay, Interval On, Flasher, Repeat Cycle, Delayed Interval & Interval/Flasher).
• opening or closing of a trigger signal (Off Delay, Single Shot & Watchdog).
These trigger signals can be one of two designs:
• a control switch (dry contact), i.e., limit switch, push button, float switch, etc.
• voltage (commonly known as a power trigger).
To help understand, some definitions are important:
Input Voltage: Control voltage applied to the input terminals (see wiring diagrams below). Depending on the function,
input voltage will either initiate the unit or make it ready to initiate when a trigger signal is applied.
Trigger Signal: On certain timing functions, a trigger signal is used to initiate the unit after input voltage has been applied.
As noted above, this trigger signal can either be a control switch (dry contact switch) or a power trigger (voltage).
Output (Load): Every time delay relay has an internal relay (usually mechanical) with contacts that open & close to control
the load. They are represented by the dotted lines in the wiring diagrams. Note that the user must provide the voltage to
power the load being switched by the output contacts of the time delay relay.
The following tables contain both written and visual descriptions on how the common timing functions operate. A Timing
Chart shows the relationship between Input Voltage, Trigger Signal (if present) and Output Contacts.
SECTION 5
Magnecraft Solution Guide 105A
Magnecraft Solution Guide 105A
Time Delay Relays – Application Data
5/2
FUNCTION DEFINITION TABLE
Function Operation Timing Chart
When the input voltage U is applied, timing delay t begins. Relay contacts R
change state after time delay is complete. Contacts R return to their shelf state
when input voltage U is removed. Trigger switch is not used in this function.
When input voltage U is applied, time delay t begins. When time delay t is
complete, relay contacts R change state for time delay t. This cycle will repeat
until input voltage U is removed. Trigger switch is not used in this function.
t
ttt
ttt
When input voltage U is applied, relay contacts R change state immediately
and timing cycle begins. When time delay is complete, contacts return to shelf
state. When input voltage U is removed, contacts will also return to their shelf
state. Trigger switch is not used in this function.
t
Input voltage U must be applied continuously. When trigger switch S is closed,
relay contacts R change state. When trigger switch S is opened, delay t begins.
When delay t is complete, contacts R return to their shelf state. If trigger switch
S is closed before time delay t is complete, then time is reset. When trigger
switch S is opened, the delay begins again, and relay contacts R remain in
their energized state. If input voltage U is removed, relay contacts R return to
their shelf state.
tt
F.
REPEAT CYCLE
Starting On
When input voltage U is applied, relay contacts R change state immediately
and time delay t begins. When time delay t is complete, contacts return to
their shelf state for time delay t. This cycle will repeat until input voltage U is
removed. Trigger switch is not used in this function.
E.
RETRIGGERABLE
ONE SHOT
Upon application of input voltage U, the relay is ready to accept trigger signal S.
Upon application of the trigger signal S, the relay contacts R transfer and the
preset time t begins. At the end of the preset time t, the relay contacts R return to
their normal condition unless the trigger switch S is opened and closed prior to
time out t (before preset time elapses). Continuous cycling of the trigger switch S
at a rate faster than the preset time will cause the relay contacts R to remain
closed. If input voltage U is removed, relay contacts R return to their shelf state.
tt
G.
PULSE
GENERATOR
H.
ONE SHOT
Upon application of input voltage U, a single output pulse of 0.5 seconds is
delivered to relay after time delay t. Power must be removed and reapplied to
repeat pulse. Trigger switch is not used in this function.
Upon application of input voltage U, the relay is ready to accept trigger signal
S. Upon application of the trigger signal S, the relay contacts R transfer and
the preset time t begins. During time-out, the trigger signal S is ignored. The
relay resets by applying the trigger switch S when the relay is not energized.
I.
ON/OFF DELAY
S Make/Break
J.
MEMORY LATCH
S Make
Input voltage U must be applied continuously. When trigger switch S is closed,
time delay t begins. When time delay t is complete, relay contacts R change
state and remain transferred until trigger switch S is opened. If input voltage U
is removed, relay contacts R return to their shelf state.
Input voltage U must be applied continuously. Output changes state with every
trigger switch S closure. If input voltage U is removed, relay contacts R return to
their shelf state.
tt
tt
t t
U
R
U
R
U
R
U
S
R
U
R
U
S
R
U
S
R
U
S
R
R
U
S
U
RtPulse
t
on
off
t
on
off
close
open
on
off
on
off
on
off
close
open
on
off tPulse
on
off
close
open
on
off
close
open
on
off
close
open
tt
t t t
D.
OFF DELAY
S Break
A.
ON DELAY
Power On
C.
INTERVAL
Power On
B.
REPEAT CYCLE
Starting Off
U = Input Voltage S = Trigger Switch R = Relay Contacts t = Time Delay
Magnecraft Solution Guide 105A
SECTION 5
Magnecraft Solution Guide 105A
5/3
Transparent Cover
Dust and Splatter Proof
Retains Timer Settings.
Output Indication
Red LED Light.
Panel Mount
Adapter Included
Panel Mountable.
Finger Safe
Sockets Available
Protect Operators
from Live Circuits.
Flexible Mounting
Mounts Directly on a DIN Rail or Panel.
Input Indication
Green LED Light.
Industry Standard
8 or 11 Pin Octal
Socket Compatible.
Mating Hold-Down
Clip Available
Secures Relay to Socket.
SECTION 5
Magnecraft Solution Guide 105A
Magnecraft Solution Guide 105A
Advantages of the TDRPRO-5100 Series Time Delay Relays
5/18
The Complete
System
Solution!
The TDRPRO-5100 Series is a programmable multi-function, multi-voltage time delay relay
with multiple time ranges for the ultimate in flexibility. The TDRPRO-5100 features thumb
wheel adjustment for impeccable accuracy. The two indicator LEDs allow the user to know
when power is present at the coil, output is energized or if the relay is performing one of
its 10 timing functions.
*See Application Data (p. 5/2-5/3) for Function Definition.
• Offers a “one stop solution” for your power management system.
• Several congurations available to meet your individual needs.
• Switching capabilities up to 12 amps.
• The broad timing range meets most timing requirements.
• The 12 to 240 VAC/VDC input voltage range enables this timer to
work with all popular voltages.
• The two LED status indicators; indicate status at a glance. The green
LED is on when power is applied to the input terminals. The red LED
blinks during timeout and is on when the output is energized.
• The tamper proof dust cover retains the settings and keeps the dust out.
• The thumb wheel adjustment for function and timing ensures accuracy
and eliminates mechanical deviation.
• Color and appearance designed to high visibility in all environments.
• Engineering availability allows for customized control system solutions.
www.magnecraft.com 847-441-2540
Magnecraft Solution Guide 105A
SECTION 5
Magnecraft Solution Guide 105A
5/19
INPUT
3
2
1
6
7
8
45
INPUT
2
1
4
3
7
8
5
6
EXTERNAL
CONTROL
SWITCH
3
21
4
9
10
11
8
6
57
EXTERNAL
CONTROL
SWITCH
INPUT
OFF DELAY ON DELAY
WIRING DIAGRAMS
Output Indication
Red LED
Input Indication
Green LED
Panel Mount
Adapter Included
UL Recognized
File No. E43641
General Specifications (@ 25°C) (UL 508)
WHITE
SECTION 5
Magnecraft Solution Guide 105A
Magnecraft Solution Guide 105AMagnecraft Solution Guide 105A
TDRPRO-5100 Series Time Delay Relays/SPDT, DPDT 12 Amp Rating
New Part Number:
Legacy Part Number:
Units
A
V
V
HP
HP
Pilot Duty
mA
Blinks = Timing
On = Energized
VAC / VDC
VA
W
0.1 sec
sec
0.1 min
min
0.1 hr
hr
10 hr
%
%
ms
ms
ms
V
V
°C
°C
grams
TDRPRO-5100
TDRPRO-5000
DPDT
Silver Alloy
12
240 AC, 50/60 Hz
30 DC
1/3 @ 120VAC
1/2 @ 240 VAC
B300
100
Red
12….240
85% to 115%
2.5
2
Green
A,B,C,D,E,F,G,H,I,J
7
0….999
0….999
0….999
0….999
0….999
0….999
0….999
0
0.1
25
25
150
100,000
10,000,000
2500 AC
1000 AC
UR, CE
-30…+70
-20…+55
IP 40
133
Output Characteristics
Number and type of Contacts
Contact Material
Current rating
Switching voltage
Minimum Switching Requirement
Indication
Input Characteristics
Voltage Range
Operating Range
Maximum consumption
Indication
Timing Characteristics
Functions Available
Time Scales
Time Ranges Available
Tolerance
Repeatability
Operate Time
Release Time
Reset Time
Performance Characteristics
Electrical Life
Mechanical Life
Dielectric strength
Environment
Product certifications
Ambient air temperature
around the device
Degree of protection
Weight
@ 240 VAC, 30 VDC
LED
% of Nominal
LED
(See page 5/3)
Mechanical Setting
Constant Voltage and Temperature
Maximum
Maximum
Operations @ Rated Current (Resistive)
Unpowered
Input to Contacts
Between Open Contacts
Standard version
Storage
Operation
AC
DC
TDRPRO-5101
TDRPRO-5001
SPDT
Silver Alloy
12
240 AC, 50/60 Hz
30 DC
1/3 @ 120VAC
1/2 @ 240 VAC
B300
100
Red
12….240
85% to 115%
2.5
2
Green
A,B,C,D,E,F,G,H,I,J
7
0….999
0….999
0….999
0….999
0….999
0….999
0….999
0
0.1
25
25
150
100,000
10,000,000
2500 AC
1000 AC
UR, CE
-30…+70
-20…+55
IP 40
133
TDRPRO-5102
TDRPRO-5002
DPDT
Silver Alloy
12
240 AC, 50/60 Hz
30 DC
1/3 @ 120VAC
1/2 @ 240 VAC
B300
100
Red
12….240
85% to 115%
2.5
2
Green
A,B,C
7
0….999
0….999
0….999
0….999
0….999
0….999
0….999
0
0.1
25
25
150
100,000
10,000,000
2500 AC
1000 AC
UR, CE
-30…+70
-20…+55
IP 40
133
51015100 5102
5/20
(109.2)
4.3
(36)
1.4
(5.1)
0.2
1.1
(28)
11
4
1
12
14
3
A2
7
5
22
21
24
68
A1
2
(72)
2.9
(37)
1.45
INPUT
INPUT
(76)
3.0
(40)
1.6
(30)
1.2
NEMA:
IEC:
(48)
1.9
(48)
1.9
(6)
0.23
0.06
(1.52)
(72)
2.8
(6.35)
0.25
(38)
1.5
(81)
3.18
(40)
1.6
(34.2)
1.35
11
4
1
12
14
3
A2
10
5
22
21
24
6
7
A1
2
INPUT
INPUT
34
9
31
11
32
8
NEMA:
IEC:
Part Number Builder
Standard Part Numbers
Other mating sockets see Section 2: 70-750E8-1, 70-750E11-1,
70-169-1, 70-170-1, 70-465-1,70-464-1
70-750DL8-1, 70-750DL11-1
SOCKETS
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Magnecraft Solution Guide 105A
SECTION 5
Magnecraft Solution Guide 105AMagnecraft Solution Guide 105A
www.magnecraft.com 847-441-2540
Input Voltage
12...240 VAC/VDC
12...240 VAC/VDC
12...240 VAC/VDC
Timing Range
0.1s...9990h
0.1s...9990h
0.1s...9990h
Functions Available
A,B,C,D,E,F,G,H,I,J
A,B,C,D,E,F,G,H,I,J
A,B,C
Contact Configuration
DPDT
SPDT
DPDT
New Part Number
TDRPRO-5100
TDRPRO-5101
TDRPRO-5102
Rated Load Current
12 Amps
12 Amps
12 Amps
Supercedes
TDRPRO-5000
TDRPRO-5001
TDRPRO-5002
Series
TDRPRO = 48 X 48 Time Delay Relay
Contact Configuration/ # of Functions
5100 = DPDT, 10 Functions
5101 = SPDT, 10 Functions
5102 = DPDT, 3 Functions
TDRPRO Relay with the
70-750DL8-1 Socket
16-TDRPROSC
Metal Hold-Down Clip
See Section 3 p.8-11
FUNCTION DEFINITIONS
See Section 5 p.3
5/21
