Interface Modules (Accessories); Chiller - Lauda ECO GOLD Operation Manual

3.5

Interface modules (Accessories)

The devices can be supplemented with further interface modules, which are connected to the rear of the control head in
two module slots ( 6.7) and are inserted.
The following modules are currently available:
1. Analogue Module (LAUDA catalogue no. LRZ 912) with two inputs and two outputs on a six-pole DIN
socket. The inputs and outputs can be set independently of one another as a 0 - 20 mA, 4 – 20 mA or 0
– 10 V interface, 20 V is brought out on the socket as a power supply for an external sensor with evalua-
tion electronics.
2. RS 232/485 Interface Module (LAUDA catalogue no. LRZ 913) with nine-pole SUB-D socket. Electri-
cally isolated using optocouplers. Using the LAUDA instruction set, extensively compatible to the ECO,
Proline, Proline Kryomat, Integral XT and Integral T series. The RS 232 interface can be connected using a
1:1 contacted cable (LAUDA catalogue no. EKS 037) directly to the PC.
3. Contact Module (LAUDA catalogue no. LRZ 914) with connector to NAMUR NE28. Range of functions
as for LRZ 915, but only one output and one input on each of two DIN sockets. Coupling socket, 3-pole
(LAUDA catalogue no. EQD 047) and coupling plug 3-pole (LAUDA catalogue no. EQS 048).
4. Contact Module (LAUDA catalogue no. LRZ 915) on a 15-pole SUB-D socket. With three relay contact
outputs (changeover, max. 30V/0.2A) and three binary inputs for control via external voltage-free con-
tacts. Plug 15-pole, (LAUDA catalogue no. EQM 030) and Plug Housing (LAUDA catalogue no. EQG
017).
5. Profibus Module (LAUDA catalogue no. LRZ 917).
You will find further information in the Operating Instructions YAAE0020 for the Profibus Module.
6. Pt100/LiBus Module (LAUDA catalogue no. LRZ 918)
External Pt100: For the connection of an external temperature sensor.
LiBus:
3.6

Chiller

The chiller mainly consists of a fully hermetically sealed compressor. The dissipation of the condensation and motor heat
takes place via a fan-ventilated lamellar condenser for water-cooled devices via heat exchanger. Here, atmospheric air is
drawn in at the front of the device, heated up and discharged at the back and sides. To ensure proper air circulation the
ventilation openings must not be covered up.
The compressor is equipped with a thermal release which responds to the compressor temperature and current con-
sumption. The chiller is normally switched in automatically, but can also be switched in manually via the operating menu
( 12.3).
The chiller is switched off when a malfunction occurs which affects safety.
The Cooling Thermostat RE 1050 G is equipped with the SmartCool technology which makes optimum use of the
compressor and only chills when cooling output is demanded by the controller. To achieve this, several sensors in the
cooling circuit monitor the operating status.
Cooling times for the various cooling thermostats can be taken from the cooling curves ( 10).
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For the connection of the Command remote control unit from the Proline equipment
line and other accessories, such as a solenoid valve for cooling water control or a re-
verse-flow protection device.
ECO Gold 10/2019 i