T05 CLIMATE CONTROLLER MODULE p 7
two inputs are single-ended, meaning that a signal source or transducer
is connected between the input terminal and the adjacent GND.
can measure a full-scale positive voltage of 0 - 10 V or 0 - 2 V with
to ground with an input impedance of 1 M
In order to directly measure 0 - 20 mA or 4 -20 mA, an internal 100
is provided.A three-pin jumper area is found closetotheAI1terminals.
jumperingthepositionshownonpage4 as20mA,the resistor is connected,
the 0 - 2 V range can measure 0 - 20 mA. The 4 mA offset is handled in
results of the two measurements are presented in parameters hex38 and
respectively. Normal output is
but it can be modified by the
transducers such as potentiometers and NTC resistors can be
measured by jumpering the two pins marked NTC. This activates a 10 k
connected to +5 V, supplying current to the transducer. Since the
analog voltage is non-linear, compensation is handled in software.
provides either a linear A/D output value
to hex FFF (12 bits) for a load
resistance variation from 0 to 20 k
or a correct temperature value from hex
(+150,0) for a typical NTC resistor of 10 k
is normally preconnected to measure an external potentiometer or NTC
as above, but the module may be delivered with this input free for
use. Please contact factory for details. The signal type for both inputs
must be defined in EEPROM parameters
is available on the terminal marked DI6. Analog input
from 0-24 V to this terminal are converted with 8-bit resolution and
in parameter hex 3A. All scaling and
must be done in an application program and this input is mainly
intended as 24 V supervisor or for simple potentiometer reading.
reads a potentiometer in T05-4. It is limited to 250
s shown in parameter hex 3B as
to the pot for special control, readable as DI7 in parameter
button ispressed,thepotcannotbe read, andparameter3Bretainsthelast
T05 CLIMATE CONTROLLER MODULE p 8
digitalinputssensingcontactclosuresareavailable,markedDI1-DI3and
They can be manipulated in software to provide a 0-to-1 or 1-to-0 change
when their level has been stable for more than a preset time from 1 ms to
s. This "debounce" time is preset in EEPROM parameter nr 3, refer to page
Digital input status is available by reading parameter
inputs, DI4-5 double as outputs, see below.
signals may also be inverted or held in an "edge-trig" register until read by
communication. These functions are enabled for individual inputs in par-
Notethat repeated communications with the DI parameter
not clear such an edge flag until you undertake an access to another
DI1 also includes a pulse
counter, incrementing on each positive edge of the
at 500 Hz max rate. The counter parameter 1
cleared at any time. It folds over to 0 after 65536 pulses.
digital outputs, DO1 and DO2 are available, each with 300 mA output
transistors. These outputs are connected to digital inputs DI5 and DI4,
Thus, if the outputs are inactive then DI4 and DI5 maybe used as
inputs. All outputs are controlled by
central, or as DO bits from the PLC in the T05.
and DO2 are short-circuit protected, automatically switching on and off
until the short is removed. The shorted status is reported in parameter
addition, two more digital outputs, DO3 and DO4, control two power relays,
RL1 and RL2, with 10 A / 230 V AC contacts.
extra miniature relay is included in some versions, e.g. as an alarm output.
the normally closed and the normally open contacts are available on the
3-pole terminal. These contacts can carry max 1 A and are not
for switching mains voltages. The relayis operated as DO6 by setting
In some versions of T05, a
relay is installed replacing the mains
Therelay is normally closed and will open when the digital output
is activated. The relay contact, 10 A at 230 V AC, is connected to
terminals 30 and 31, which are used for 230 V mains in other versions.
may be necessary to switch off outputs if communication from the central
should fail. A timer in parameter
will turn off outputs after preset, non-zero
time of max 65 s. PLC masked outputs are not affected.
