ELKO ep SHT-1 Digital Time Switches Instruction Manual

ELKO ep SHT-1 Digital Time Switches

Digital time switches with weekly/yearly program

Characteristics

• Serves for controlling of various types of appliances in dependence on real-time (automation-switching of heating, pumps, ventilation etc.). Appliances can be op-erated in concrete periodic time cycles or according a pre-set program (depends on type, see the chart Versions of time switches).
• SHT-1: 1-channel version.
• SHT-1/2: 2-channel version (to each channel can be assigned an individual program). Possibility to control two independent circuits.
• The setting of switching by:
  • program (PROG) – switching according to programs set in SET 1 . Possibility to set the repeat every minute or every hour.
  • random (AUTO ) – random switching in 10-120 min intervals.
  • permanently manually .
• Switching modes (OUT):
  • OUT ON – normal – 2 positions in memory (close /open), shortest time of closing is 1 min.
  • OUT ON – cyclic – 2 positions in memory (pulse/delay), range 1-99s.
  • OUT ON – pulse – 1 position in memory, range 1-99s.
  • OUT OFF – turn off the switching mode.
• Set time of pulse/delay is on one channel the same for all programs (it is not pos-sible to set more pulses with different durations on one channel).
• “Holiday mode “ – the possibility to choose the period, when the device will be not switching according to a standard program and will be blocked for the pre-set time.
• 100 memory positions (by SHT-1/2 are those 100 positions common for both channels).
• Programming of the device can be realized even under voltage and also even in backup mode.
• Output relays operate only under voltage.
• Automatic change-over between summer/winter time (setting is for time zone GTM+1:00).
• Back-lighted LCD.
• Easy and quick setting by 4 control buttons.
• Sealable transparent cover of the front panel.
• Time switch is back-up with an in-built lithium element, which saves data during volt-age failure. Back-up time reserve – up to 3 years.
• Supply voltage: AC 230V or AC/DC 12-240V.
• 2-Module, DIN rail mounting, saddle terminals.
• The device is delivered with pre-programmed actual time, which is permanently displayed also in back-up mode.
• The device contains a CR2032 backup battery. In the event of a discharge, we recommend that it be replaced by an ELKO EP service center due to the necessary intervention in the product.

Symbol

Connection

Description

1. Supply terminals (A1)
2. Display
3. Sealing spot
4. Supply terminals (A2)
5. Output – channel 1 (16-15-18)
6. Transparent cover
7. Controlling buttons
8. Output – channel 2 (26-25-28) only SHT-1/2
9. Random switching mode
10. The choice of switching mode
11. Indication (1st channel)
12. Output ON/OFF
13. Manual switching mode
14. Channel 1 (bargraph)
15. Control button PRG / +
16. Reset
17.  Control button MAN / –
18. Shows the day in the week
19. Indication of the pulse/cyclic output
20. Indication (2nd channel)
21. AM/PM indication in 12h format
22. Shows summer/winter mode
23. Indication of switching hour of the day
24. Channel 2 (bargraph)
25. Control button MAN2 / ESC
26. Control button OK

CONTROL OF A DISPLAY WITH BACKLIGHT
Display is illuminated with a back-light for 10 s from last button press. Permanent on / off is activated by synchronic press of buttons MAN, ESC, OK. After permanent on/off activation, display will fl ash shortly.

Technical parameters

Max. dissipated power

(Un + terminals):

|

3.5 W

|

5 W

Supply voltage tolerance:| –15 %; +10 %
Back-up supply:| yes
Summer/winter time:| automatic

Output

Time circuit

Power back-up:|

up to 3 years

---|---
Accuracy:| max. ±1s/day at 23 °C (73.4 °F)
Minimum interval:| 1 min
Data stored for:| min. 10 years
Cyclic output:| 1 – 99 s
Pulse output:| 1 – 99 s

Program circuit

Other information

Cross-wire section – solid/

stranded with ferrule (mm2):

| max. 2× 2.5 or 1× 4/

max. 1× 2.5 or 2× 1.5 (AWG 12)

Dimensions:| 90 × 35 × 64 mm (3.5˝ × 1.4˝ × 2.5˝)
Weight:| (UNI) – 117 g(4.13 oz),

(230) – 115 g(4.06 oz)

| (UNI) – 132 g(4.7 oz),

(230) – 128 g(4.5 oz)

Standards:| EN 61812-1

Warning

This device is constructed for connection in a 1-phase network AC/DC 12 – 240 V or AC 230 V (according to the type) and must be installed according to norms valid in the state of an application. Installation, connection, setting and servicing must be carried out by qualified electrician staff only, which have perfectly understood the instructions and functions of the device. This device contains protection against overvoltage peaks and disturbing impulses in the power supply network. For the correct function of the protection of this device, there must be suitable protections of higher degrees (A,B,C) installed in front of them and according to the standards, interference of switching devices must be securely eliminated (contactors, motors, inductive loads, etc.). Before installation, make sure that the device is de-energized and the main switch is in the “OFF” position. Don‘t install the device to sources of excessive electromagnetic interference. Ensure correct installation by perfect air circulation so that during continuous operation and a higher ambient temperature, the device does not exceed the maximum allowed operating temperature. For installation and setting use a screwdriver with a width of approx 2 mm. Keep in mind that this is a fully electronic device and approach accordingly with the installation. The non-problematic function of the device is also dependent on the previous method of transportation, storage, and handling. In case of any signs of damage, deformation, malfunction, or missing parts, don‘t install this device and claim it at the dealer. The product must be treated as electronic waste at the end of its life.

Versions of time switches

Mode precedence

Manual output control – is superior to other set modes

Control

The device differs between short and long button presses. In the manual marked as:

• short button press (<1s)
• long button press (>1s)
• number indicates button press sequence

After 30s of inactivity (from the last press of any button) will device automatically returns to the starting menu.

SET 1 Program setting

• If the program memory is full, display announces it by notice FULL.
• If “- -” (2 dashes) is set as the hour or minute value instead of a numerical value, the start / end of the program will be repeated every hour or every minute.

Program adjustment

Program deleting

Deleting of all programs

SET 2 Date and time setting

SET 3 Setting of programmed / random mode

• In starting mode by chosen channel flashes symbol Prog or on display (automatically preset switching according to PROG).

SET 4 Setting of pulse / cyclic mode interval

• The setting of time of pulse / cyclic mode switching is realized by SET 1 .

SET 5 Holiday mode

• In the starting mode during the activation of holiday mode, flashs symbol on display.

End Exit from the menu – return to the starting mode

Reset

Activated by, a covered RESET button, short press with a blunt spike (with max. 2 mm diameter). After pressing, information about the type of device and firmware version will displayed for 3 s and then the device performs in starting mode. Reset will delete an actual time, set time of pulse/cyclic mode, and all temporary functions (manual or random switch output). Reset will save all set programs.

Example of programming

Setting of SHT-1/2 to be activated from Monday till Friday at 8:00 by program 0 ( ) , and deactivated from Monday till Friday at 16:30 by program 1 ( ).

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