Programming the Grässlin Digi 42/2 -L Timer

I. General Description

A. The circular keypads are positioned to provide a sequential path for programming. Starting with Prog. to select a program, clockwise to hand symbol to select ON or OFF, then h for hour, m for minute, and finally Day to select day or days of the week.

B. If an input is missing or incomplete, the missing segments will flash when the clock symbol or Prog. key is depressed. For example, if no ON or OFF is selected, the ON symbol will flash. The missing entry must be completed before programming can resume.

C. While programming, pressing the h or m key longer than 2 seconds will cause a rapid roll of the parameter.

D. A Program consists of:

1. An ON or OFF command

2. Time of Day (Hour and Minute)

3. Single day or multiple days on which it is to occur.

IMPORTANT:

1. Before proceeding with setting the time and programming the unit, press the reset key (Res.) to clear all data from the memory.

2. See “An Example” further down on this page get familiar with typical lighting schedule.

II. Manual Daylight Time Changeover

The Digi 42/2 offers the manual daylight time changeover in the spring and fall. Depressing the +/-1h key sets clock time up or down 1 hour to change the time twice a year

III. Setting Time and Day of Clock

IMPORTANT:

1. Before proceeding with setting the time and programming the unit, press the reset key (Res.) key to clear all data from the memory.

2. See “An Example” on page 4 to get familiar with typical lighting schedule.

A. Select military (24:00 hr.) or AM/PM (12:00 hr.) time by depressing and holding h key while pressing +/-1h key to toggle between military and AM/PM. (AM appears in display when in AM/PM mode.)

B. Press and hold down clock symbol key (do not release until step G).

C. Press +/-1h key once if setting the timer when daylight time is in effect (+1h appears in display).

D. Set hour with h key.

E. Set minutes with m key.

F. Press Day key repeatedly to the day of the week. (1 is Monday, 7 is Sunday)

G. Release clock symbol key, colon will begin flashing.

YOU HAVE COMPLETED PROGRAMMING.

NOTES:

1. A flashing display indicates either incomplete data entry or the battery is low (2 week, internal battery back-up). Check to see if days and ON or OFF times are entered, and check the power supply to the time control.

2. The output relays will switch ON (or OFF) only at programmed times. After programming is completed, if a channel should be ON, it must be manually turned ON with the hand symbol key. For example, programming is completed at 2PM and CH1 was programmed to be ON at 6AM and OFF at 11PM. After pressing the clock key, CH1 will be OFF; press hand symbol 1 to turn it ON.

V. Review and Change of Programs

A. To review a program at any time, press Prog. key. Programs will be displayed in the sequence they were entered with repeated presses of Prog. key.

B. To change a program, select the program to be changed with Prog. key, and enter the new time of day, and/or days of week just as in the programming steps shown above. The old program is overwritten with the new selections. Press Prog. to store the new program.

C. To delete an individual program, select the program as in step “A” and press the m key and then the h key until “--:--” appears in display. Press either Prog. or clock symbol key until “--:--” flashes. The program is deleted after few seconds.

VI. Manual Override

While in the Run mode, (clock symbol is displayed)

1. Pressing the hand symbol key will reverse the load status (switch load OFF if it is ON, or switch ON if it is OFF). A hand symbol appears in display to indicate the override is active. At the next scheduled switching time, automatic time control will resume, eliminating override.

2. Pressing the hand symbol key a second time, load ON symbol in square brackets appears in the display indicating the load is switched permanently ON.

3. Pressing the hand symbol key a third time, load OFF symbol in square brackets appears in the display indicating the load is switched permanently OFF.

4. Pressing the hand symbol key a fourth time returns to automatic, clock symbol appears in the display.

VII. Manual Daylight Time Changeover

The Digi 42/2 offers the manual daylight time changeover in the spring and fall. Depressing the +/-1h key sets clock time up or down 1 hour to change the time twice a year.

VIII. Programming Chart

The Programming Chart may be used as an aide to program Grässlin Time Switch.

				Day of the Week
Program Number	CH1 (ON/OFF)	CH2 (ON/OFF)	Switching Time	MO (1)	TU (2)	WE (3)	TH (4)	FR (5)	SA (6)	SU (7)
1
2
3
4
5
6
7
8
9
10
11
12

1
2
3
4
5
6
7
8
9
10
11
12

An Example:

The following is an example of filled out Programming Chart according to typical lighting schedule.

For TIMING CHANNEL NO. 1, from Sunday to Thursday, Time Switch CH1 should be ON at 6:00 AM and OFF at 11:00 PM, Friday and Saturday CH1 should be ON at 6:00 AM and OFF at 12:00 AM¹.

For TIMING CHANNEL NO. 2, from Sunday to Thursday, Time Switch CH2 should be ON at 5:00 AM and OFF at 12:00 AM, Friday and Saturday CH2 should be ON at 5:00 AM and OFF at 1:00 AM.

				Day of the Week
Program Number	CH1 (ON/OFF)	CH2 (ON/OFF)	Switching Time	MO (1)	TU (2)	WE (3)	TH (4)	FR (5)	SA (6)	SU (7)
1	ON		6:00 AM	1	2	3	4			7
2	OFF		11:00 PM	1	2	3	4			7
3	ON		6:00 AM					5	6
4	OFF		12:00 AM	1					6²	7
5		ON	5:00 AM	1	2	3	4			7
6		OFF	12:00 AM	1³	2	3	4	5
7		ON	5:00 AM					5	6
8		OFF	1:00 AM						6⁴	7

¹ Attention: 12:00 AM (midnight) is the beginning of a new day (the lights will go off the next day at 12:00 AM).

² Lights turned OFF Saturday morning at 12:00 AM (midnight) have been turned ON Friday night.

³ Lights turned OFF Monday morning at 12:00 AM (midnight) have been turned ON Sunday night.

⁴ Lights turned OFF Saturday morning at 1:00 AM have been turned ON Friday night.