The Macromatic TD-70828 is an Flasher (OFF 1st) Time Delay Relay. This 8 pin plug-in relay has an input voltage of 24V AC/DC with an output of 10A DPDT. It has a time range of 0.05 sec to 999 hours. The unit has one pushbutton thumbwheel that selects one of seven time ranges, while three other thumbwheels digitally set the precise time delay within that range. The red LED indicates the status of the timing mode and time out conditions. The TD70828 uses an 8 pin 70169-D octal socket. Note: Image is an approximation. Actual part may differ.

Specifications

Relay Function- Flasher (OFF 1st)
Relay Timing Range- 0.05 Sec - 999 Hours
Input Voltage- 24V AC/DC
Output- 10A DPDT
Voltage Tolerance- AC Operation: +10/-15% of nominal at 50/60 Hz
DC Operation: +10/-15% of nominal
Load- 3VA
Setting Accuracy- Constant Voltage/Temp: The greater amount of +/-0.1% of set time or +/-50ms, Variable Voltage/Temp: The greater amount of +/- 1% of set time or +/- 50ms.
Repeat Accuracy- Constant Voltage/Temp: The greater amount of +/-0.1% of set time or +/-0.02 sec, Variable Voltage/Temp: The greater amount of +/- 1% of set time or +/- 0.02 sec.
Reset Time- 0.1 Seconds
Start Up Time- 0.05 Sec
Maintain Function Time- 0.01 Sec
Insulation Voltage- 2000 V
Operating Temperature- -28 C to 65 C (-18 F to 149 F)
Storage Temperature- -40 C to 85 C (-40 F to 185 F)
Output Contacts- DPDT 10A @ 240V AC/30V DC,
1/2HP @ 120/240V AC (N.O.), 1/3HP @ 120/240V AC (N.C.)
B300 & R300; AC15 & DC13
Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
Dimensions- 2.4" Height x 1.7" Width x 3" Depth
Approvals- UL Recognized, CE, CSA, UL Listed (with Socket)

For the Flasher (OFF 1st) function, the time delay starts when the input voltage is introduced and the relay is de-energized, or "off". The relay energizes after the first time delay ends, and stays energized for another time delay interval. The cycle then repeats until the input voltage is taken out. Pilot duty rating.

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Explanation of Macromatic Time Delay Relay Timing Functions

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Macromatic TD-70828 Time Delay Relay