Doepke SITU Instrukcja instalacji i obsługi - Strona 2

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Installation and Operating Manual

Operating signal converter SITU with 1–10 V interface

General information

The SITU is a system component of the SI building management system and can also

be used for system-independent control functions. The SITU is used as an electronic

potentiometer for controlling electronic ballasts and dimmers fitted with a 1–10 V

interface.

Control function

The switch inputs of the SITU are controlled with pulses from the operating voltage

on inputs A1, A3 or A4. If continuous voltage is applied to one of these inputs, e.g.

because of a fault in a command device, the inputs can be controlled via the rest of

the inputs.

SITU control inputs

Control input: memory on

Input A1 is controlled by the "memory on" switch position,

i.e. the voltage on the 1–10 V interface applies the last saved

value and the load relay is switched on.

Control output: on/off

The on/off status of the relay is indicated by an integrated

LED. An external switch position indicator can be connected

using the output signal on the combined control output/

input A1.

Control input: memory on/off/smooth adjustment

A short key pulse (> 60 ms) at input A2 applies the "memory

on/off" function, while a longer control pulse (> 600 ms)

changes the control voltage to the 1–10 V interface. The

change is effected in a sloping characteristic curve, i.e.

increasing/decreasing smooth adjustment to the maximum/

minimum value and vice versa. The cycle time is approx.

3.5 seconds. The last set value is saved when a switch-off

pulse is engaged and can be recalled again later with switch-

on pulses at input A1 or A2 (memory function). Smooth

adjustment alternates between increasing and decreasing

values (changes direction) every time the command device is

engaged. The relay output is switched on or off with the on/

off function.

Control input: central off

The "central off" switch position sends a control pulse to

input A3 and the load relay is switched off.

Control input: central on

When a pulse is sent to input A4, the "central on" function is

activated, i.e. the voltage on the 1–10 V interface applies the

maximum value (10 V) and the load relay is switched on.

Mounting

Installation of the device may only be carried out by an authorised, trained techni-

cian. Snap onto DIN rail.

Observe the operating and installation instructions provided by the electronic bal-

last manufacturer, especially those regarding the connection assignment, line crite-

ria and PE conductor connection required for the electronic ballast. If more than one

electronic ballast is used, only use EBs from the same manufacturer, of the same type

and with the same output, in order to prevent differences in brightness.

Requirements for command devices

Any device with outputs that function as on/off switches on 24 V DC are suitable for

use as command devices. The following criteria must be met:

1. The bounce time when the contact closes must not exceed 10 ms.

2. The maximum contact resistance depends on the number of the SI components to

be controlled simultaneously: Rmax = 1 kΩ/n (Rmax = max. contact resistance of

command device, n = number of inputs to be controlled simultaneously).

Conventional switches with mechanical contacts generally meet this criterion. How-

ever, special attention must be given to command devices concerning the resistance

of the semiconductor or residual voltage.

Guarantee

All professionally installed, unaltered devices are covered by warranty during the

statutory guarantee period from the day of purchase by the end user. The guaran-

tee is not applicable to damage incurred during transport or caused by short-circuit,

overloading or improper use. In the event of defects in workmanship or material,

which are discovered within the guarantee period, the company will provide a repair

or replacement free of charge. The guarantee will be rendered null and void if the

device is opened without authorization.

3931117 | 08/2013 | Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden

Technical Data

SITU

Control function

1–10 V interface

semiconductor output, galvanically isolated from

Design

Load rating

Control output

Design

Load rating

Relay output

Design

relay contact, 1 NO contact (potential-free)

Rated voltage

Rated current

Switch position

indicator

Protection class

IP 30 when installed in distribution board

Housing

Terminals

Max. clamping area

Min. cross-section

Ambient tempera-

ture

Design requirements

Load factors in the SI building management system

Input load factor

Output load factor

Wiring diagrams

zentral ein

(central on)

zentral aus

(central off)

dimmen / ein / aus

(dimming / on / off)

Memory ein

(memory on)

V Operating signal converter SITU

Steuereingang

Memory ein

Zentral ein

control input

memory on

central on

Steuerspannung

control voltage

Ausgang

output

z. B. 40 %

100 %

central memory on

relay on

memory on, relay on

memory off, relay off

smooth adjustment 1–10 V

central off, relay off

central on (max. value 10 V)

relay on

operating and mains voltage

40 mA

external switch position indicator

semiconductor output

max. 50 mA

230 V / 50 Hz

10 A (max. 25 electronic ballasts / 58 W)

via internal LED

polycarbonate (PC)

U-clamp terminal

1 × 2.5 mm² (solid)

1 × 1.5 mm² (stranded)

0.4 mm

-10 °C to +45 °C

DIN EN 60669

1 ILF per input

20 OLF at output A1

1.1

1.5

2.1

2.5

EIN

1...10 V

SITU

1.3

1.7

2.3

2.7

1.4

1.8

externe Anzeige

(external display)

24 V DC

0 V DC

Zentral aus

ein

aus

dimmen

central off

off

dimming

t < 600 ms

t > 600 ms

z. B. 40 %

EVG

dimmen

dimming

t > 600 ms