The Macromatic TD-71621 is an Off Delay Time Delay Relay. This 11 pin plug-in relay has an input voltage of 240V AC 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 chooses one of seven time ranges, while three other thumbwheels digitally set the precise time delay within that range. The red LED shows the current status of the timing mode and time out conditions. The TD71621 uses an 11 pin 70170-D octal socket. Note: Image is an approximation. Actual part may differ.

Specifications

Relay Function- Off Delay
Relay Timing Range- 0.05 Sec - 999 Hours
Input Voltage- 240V AC
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- Functions with control switches: 0.04 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 Off Delay function, the relay energizes once the trigger is introduced. The time delay only starts once the trigger is taken out. The relay then de-energizes after the time delay finishes. Re-introducing the trigger before the time delay finishes resets it, preventing the relay from de-energizing. The input voltage must be in place for the trigger to be successfully applied. Pilot duty rating

Macromatic TD-7 Series Relay Installation Instructions

Explanation of Macromatic Time Delay Relay Timing Functions

Macromatic TD-7 Series Time Delay Relay Competitive Comparison

Macromatic TD-71621 Off Delay Time Delay Relay