The TD-7 series of time delay relays offer an easy and accurate way to select any time delay between 50ms & 999 hours. Programming is accomplished by using a pushbutton thumbwheel to select one of seven built-in time ranges and three pushbutton thumbwheels to digitally set the time delay required. This method provides a greater setting accuracy than is found on other units with an analog potentiometer. An LED indicates timing mode and time out condition.

The TD-7 series comes in two versions: a single function product or a multi-function product. The TD-781 multi-function unit has a fifth pushbutton thumbwheel to select one of five built-in functions.

• Available in either Single-Function or Multi-Function versions (with five user-selectable modes)
• Pushbutton Thumbwheels for digital set of time delay & function (TD-781 series only)
• 50ms - 999 hour programmable time range
• Uses industry-standard 8 or 11 pin octal sockets
• 10A DPDT output contacts
• LED indicates timing mode and time out conditions
• with appropriate socket

• On Delay
• Off Delay
• Interval On
• Single Shot
• Flasher

Application Data

Voltage Tolerance
AC Operation: +10/-15% of nominal at 50/60 Hz. DC Operation: +10/-15% of nominal.

Load (Burden)
3 VA

Setting Accuracy
+1% of set time or +50ms, whichever is greater.

Repeat Accuracy
+0.1% of set time or +0.02 seconds, whichever is greater.

Reset Time:
On Delay/Interval/Flasher: 0.1 Seconds
Off Delay/Single Shot: 0.04 Seconds

Start-up Time:
(Time from when power is applied until unit timing)
120 & 240V Units: 0.05 Seconds
12, 24 & 48V Units: 0.08 Seconds

Maintain Function Time:
(Time unit continues to time after power is removed)
0.01 Seconds for all units.

Temperature:
12-120V Input Voltage: -28^o to 65^oC (-20^o to 150^oF)
240V Input Voltage: -28^o to 50^oC (-20^o to 122^oF)

Insulation Voltage: 2,000 volts

Output Contacts:
DPDT 10A Resistive @ 240V AC/28V DC
1/2HP @ 240V AC, 1/3HP @ 120V AC
B300 & R300; AC15 & DC13

Life:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations

Compatibility
Do not use a solid state switch to initiate the timing sequence-problems with leakage current could occur. Contact Macromatic Controls for additional information.

Triggering Off Delay or Single Shot Units:
Timing sequence must be initiated only after input voltage is applied to unit. Minimum required trigger switch closure time is 0.1 seconds.

LED:
Flasher Mode: Flashes during "ON" time; continuous on during "OFF" time
All Other Modes: Flashes during timing; continuous on after time out

Approvals:

Dimensions