SyxthSense Ltd
Copyright © 2020 SyxthSense Ltd. All rights reserved - 11/2020
PS
CT2.161
- 14/34
Online store:
www.syxthsense.com
Enquiries: T:
+44 (0)1392 875 414
E:
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CO2; the input is used as CO2 0..10Vdc measurement for CO2 control (requires AI option)
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MAIN LOOP; the 0..10Vdc voltage is used for the main temperature control (requires AI option)
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CLOSE FOR ECO; the input operates as volt-free input to override to ECO mode when closed
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OPEN FOR ECO; the input operates as volt-free input to override to ECO mode when open
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CLOSE FOR OFF; the input operates as volt-free input to override to OFF mode when closed
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OPEN FOR OFF; the input operates as volt-free input to override to OFF mode when open
ROOM allows remote temperature sensor to be used for the main temperature loop control. The
internal temperature sensor is disengaged from control.
FLOOR option links the temperature measurement to the High/Low Limit control. When the Floor
Control is selected for RI1/RI2, the touchscreen SMALL ACTION CIRCLE starts to display the Floor
Temperature (configurable). Note if both RI1/RI2 set to Floor Control RI1 takes precedence.
OUTSIDE allows outside (or network) temperature to be displayed on the screen. When the Outside is
selected for RI1/RI2, the touchscreen SMALL ACTION CIRCLE starts to display the Outside
Temperature (configurable). Note if both RI1/RI2 set to Outside RI1 takes precedence
NETWORK NTC10 option makes the NCT10 measurement available as temperature over the
network.
Digital Input Modes
"CLOSE FOR" Configuration - The resistive input can be used as digital volt-free contact can be linked
to e.g. external timer to switch the device to OFF mode during the timed period. When the device sees
transition from open (COMFORT) to close (ECO/OFF MODE), the operating mode does not change
until the Delay Timer has expired.
"OPEN FOR" Configuration - The resistive input can be used as digital volt-free input to activate ECO
or OFF mode when the contact opens. In this mode it can be connected to a window switch, door card
switch or PIR sensor. When the device sees transition from closed to open, the operating mode does
not change until the countdown timer has expired (DIGITAL INPUT DELAY setting).
Note: Resistive Inputs as a Digital Input operate with approx. ten seconds delay and are not
instantaneous. Therefore they are not suitable for fast switching (transition will be missed
during the inherent delay time).
Note: RI2 is not available with SRC-701.
2 x 0..10Vdc Input (AI
Options
If the SRC unit has been ordered with AI option, then inputs RI1 and RI2 become 0..10Vdc inputs.
NETWORK 0-10V; this selection allows the 0..10Vdc measurement to be converted to 0..100% and
the measurement can be monitored over the network.
CO2; this selection converts the 0..10Vdc input to 0..2,000ppm. The measurement is available over
the network for monitoring, and the measurement is automatically linked to the CO2 control.
MAIN LOOP; this selection converts the 0..10Vdc input to 0..50°C. The measurement is available over
the network for monitoring, and the measurement is automatically linked to the main temperature
control loop.
Note: RI2(AI2) is not available with SRC-701.
DI Digital Input
The digital volt-free contact can be configured to the following options are:-
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CLOSE FOR ECO; Default
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OPEN FOR ECO
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CLOSE FOR OFF
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OPEN FOR OFF
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CHANGEOVER; changes stage 1 control between heating and cooling
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DISABLE COOLING; disabling the cooling stages when ON (condensation)
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CONTACT ALARM
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NETWORK
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CLOSE FOR BOOST (with CE-option only)
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OPEN FOR BOOST (with CE-option only)
"OPEN FOR" Configuration - The digital volt-free input can be used to activate ECO or OFF mode
when the contact opens. In this mode it can be connected to a window switch, door card switch or PIR
sensor. When the device sees transition from closed to open, the operating mode does not change
until the countdown timer has expired (DIGITAL INPUT DELAY setting).
"CLOSE FOR" Configuration - The digital volt-free contact can be linked to e.g. external timer to
switch the device to OFF mode during the timed period. When the device sees transition from open
(COMFORT) to close (ECO/OFF MODE), the operating mode does not change until the Delay Timer
has expired.
CHANGE-OVER - The digital input can also be used to override from heating to cooling mode. The
device works in the heating mode when the contact is open, and in the cooling mode when the contact
is closed.
