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PWM Control / Digital
Outputs
(TRC-P-1A2T/TRC-P-H-3R2T)
Belimo 6-Port Control Mode
AntiJAM Valve Exercise
Function
Alarm Display
Web-site: www.produal.com
Enquiries: T: +358 10 219 9100 E: info@produal.fi
controller can control both heating and cooling ON/OFF valves (and EC Fan via 0-10Vdc
output).
The TRC-P-1A2T/TRC-P-H-3R2T controller has two digital triac outputs. The digital outputs are used
for PWM control for heating and cooling valves. The PWM period is set in the INPUTS/OUTPUTS
PWM Period Setting. The below diagram illustrates the principle of the PWM control..
24Vac
Fuse
0Vac
Clg Actuator
Absolute
Thermic
Max. 27.6VAC
(PWM)
TRC-P-1A2T
calcSP = Calculated Setpoint
HDz = COMFORT Heating Deadzone
NOTE:With TRC-P-1A4R/3R2T analogue outputs Y2 & Y3 are not available. Y1 is available for
EC Fan control (or other valid output control - see Y1 options). With TRC-P-H-3R2T the Y1 is
set as default 'Modulating Fan', and the device does not have 0-10Vdc outputs.
NOTE:Please note that DO1 and DO2 are 24Vac Triacs switching to 0V. Please follow the above
wiring diagram.
The TRC-P controller can be configured to control Belimo 6-Port valve by selecting 6-Port or 6-Port
Reverse mode for the analogue output (Y1/Y2/Y3). The diagram below illustrates the operation.
MAX
ANALOGUE OUTPUT MODES
FLOW
6-WAY; HTG1 = 5V to 2V, CLG1 = 7V to 10V
6-WAY REVERSE; HTG1 = 7V to 10V,
CLG1 = 5V to 2V
MIN
SEQUENCE 1
2V
FLOW
100%
0%
-
HDz/CDz = Comfort Zero Energy
Deadzone (Default 0.5°C)
nSP= Nominal Setpoint (Default 21°C)
Note: Analogue Output Scaling/Anti-JAM is not available in the 6-Port and 6-Port Reverse
modes. Number of Heating and Cooling Stages must be set at minimum to one.
If the AntiJAM function is enabled the controller monitors for inactivity. If the control outputs have been
fully closed or fully open more than the AntiJAM period, the controller will open/close the outputs to by
30% for a short period of time. The AntiJAM function is enabled through the configuration parameters
by selecting the required AntiJAM period by days.
The TRC-P controller provides two
Alarm Modules each of which can be
configured to detect and display alarm
condition on either CO2, Humidity or
Temperature Sensor (internal or external
depending on which is being used). The
alarm function can be disabled by setting
the alarm source as "NONE". Alarms are
disabled by default.
Each Alarm has three alarm states – No
Alarm, Amber and Red. When in alarm
the alarm is displayed by alarm bell in
ACTION CIRCLE. The ACTION CIRCLE
rotates all active measurements so the
alarm is displayed when the
corresponding measurement is
displayed.
HIGH LIMIT ALARM
If the Red threshold is set higher than the amber threshold:
230 Vac N
Transformer
230 Vac L
PWM CONTROL EXAMPLE (HEATING STAGE1 - DO1)
PWM Period Setting: 30s (Default)
100%
HEATING
PWM Output
STAGE 1
60% of time: ON = 0.6 * 30 = 18s
40% of time: OFF = 0.4 * 30 = 12s
60%
Example:
Htg1 = 60%
calcSP
0%
-
SEQUENCE 2
5V
7V
6-WAY VALVE CONTROL
SIGNAL (Y1/Y2/Y3)
nSP
MEASURED
TEMPERATURE
HDz
CDz
Zero Energy
Deadzone
CO2 AMBER ALARM
Target
21
A
CO2
950
ppm
Copyright © 2020 Produal Oy - All rights reserved - 07/2020
DIGITAL PWM OUTPUT (DO1)
18s
12s
ON
°C / °F
OFF
+
TIME (seconds)
10V
+
CO2 RED ALARM
Target
°C
21
.5
A
CO2
1300
ppm
PS 6001TRC-P - 16/34
Produal Oy
°C
.5
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