The 422A FLIP-FLOP is available with Repeat Cycle operation. During Repeat Cycle operation the 422A cycles ON and OFF repeatedly, allowing periodic cycling of a load. Two knobs are available to individually adjust the ON-time and the OFF-time. The 422A can be ordered with either the relay being energized during the first timing period or de-energized during the first timing period.
The 422A FLIP-FLOP is also available with Single Cycle operation. With Single Cycle operation, the 422A will cycle ON and OFF one time. This is commonly referred to as “one-shot” operation. The 422A can be ordered with the relay being energized during the first timing period or de-energized during the first timing period.
There are six selectable timing ranges available for the ON-time period and 6 selectable ranges for the OFF-time period. These ranges can be ordered as either 1 and 10 SEC/MIN/HRS or 5 and 50 SEC/MIN/HRS. Having these ranges individually selectable for ON-time and OFF-time allows for a load to be energized for a brief time over a cycle that can last up to 50 hours. This is ideal for lubrication or other maintenance functions that must occur each shift or day during a plant operation.
The 422A’s 1/8 DIN housing is compact, and designed for panel mounting. The timer is mounted in an 8-pin round (octal) socket. The front of the 422A features 2 knobs. One knob is used to set the On-time and the other knob is used to set the Off-time for the timer’s cycle.
The timing range for the On-time and Off-time can be individually set. The range select switches are located on the side of the housing, so that when panel mounted, these switches are not accessible to the operator. This tamper proof feature prevents unauthorized or hazardous changes to the timing range from being made.
The output of the 422A is a DPDT mechanical relay which is rated for 10 Amps at 30 VDC and 240 VAC. The 422A can be ordered with this output being energized during the first timing period, or de-energized during the first timing period.
A single Flip-Flop Timer can be powered using 24-240 VAC or 24 VDC power, greatly simplifying ordering and inventory management of replacement units.
The 422A has individual LED indicators for ON-time and Off-time. These LED’s provide a unique and effective method of cycle progress indication. Off before timing, the LED’s blink at an ever increasing rate as the cycle progresses: once every 3 1/2 seconds during the first 10% of the cycle, twice during the second 10%, and so on until the timing cycle is complete. (In the 1, 5, 10 and 50 second ranges, the LED is Off before timing and steady On during the timing cycle).