Lauda VC 1200, Руководство по эксплуатации

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Technical information for the refrigeration unit can be
found in Ä Chapter 11.2 ‘Cooling capacity’ on page 95 .
3.4.3 Interfaces
A general overview of the standard interfaces and the optional
interface modules of the device can be found in the following sec-
tions.
The equipment connected to the low-voltage inputs and
low-voltage outputs must have safe separation from
dangerous to touch voltages according to DIN EN 61140
such as by the use of double or reinforced insulation
according to DIN EN 60730-1 or DIN 60950-1.
The installation of these additional interface modules is
described in these operating instructions. Further infor-
mation regarding wiring and the use of these interface
modules is provided in the separate operating instruc-
tions for the interface modules. The respective oper-
ating instructions must be consulted regarding appro-
priate use.
The devices are equipped with a USB interface (type B) as
standard. This interface enables connection to a PC. Software
updates are installed on the device via this interface (only for
updaters, no process interface).
The devices are equipped with an alarm output as standard equip-
ment. This changeover contact is switched if the device changes to
the standby state or if an alarm is triggered. Reverse flow protec-
tion can be activated in this way or faults can be registered on a
system.
Devices can be supplemented with additional interface modules.
n The analogue module (catalogue number LRZ 912) has
2 inputs and 2 outputs on a 6-pin DIN socket. The inputs and
outputs can be adjusted independently as 0 – 20 mA,
4 – 20 mA or 0 – 10 V interfaces. For power supply of an
external sensor with evaluation electronics, the socket is sup-
plied with 20 V.
n The RS 232/485 interface module (catalogue no. LRZ 913) is
designed as a 9-pin SUB-D socket. Galvanically separated by
an optocoupler. The RS 232 interface can be connected
directly with the PC using a straight-through cable. The LAUDA
command set makes the interface module compatible with the
product lines ECO, Variocool, Proline, Proline Kryomat, PRO,
Integral XT and Integral T.
USB interface
Alarm output
Additional interface modules
Device description
Variocool 19