Temperature Control Circuit - S+S Regeltechnik Rymaskon 600 Operating Instructions Manual

Operating instructions
RYMASKON ® 600 - BACnet
RYMASKON ® 600 - Modbus
TEMPERATURE
CONTROL CIRCUIT
Temperature Control
Loop Operation
S+S REGELTECHNIK GMBH | THURN-UND -TA XIS - STR. 22 | D -90411 NÜRNBERG | GERMANY | FON +49 ( 0 ) 911 51947- 0 | w w w.S p lusS.de
The controllers can control up to two heating and cooling stages. The default is one heating and one cooling stage.
Furthermore, use the digital input, the measured temperature or the bus to automatically switch between heating
and cooling mode (Changeover). This allows various control configurations:
• 1-/2-step heating control
• 1-/2-step cooling control
• 1-/2-step heating control and 1-/2-step cooling control (up to 3 outputs)
• 1-/2-step heating/cooling control (with automatic switching – Changeover)
The controller modulates the required output capacity for heating and cooling depending on the calculated target
and actual temperature using P or PI control. The calculated target temperature consists of the nominal target
temperature plus the adjustment made by the user.
In the preferences of the RYMASKON
for heating stage 1 is linked to analogue output Y2 (0–10VDC control) and the output capacity
for cooling stage 1 is linked to analogue output Y3 (0–10VDC control).
RYMASKON ® 640/660 controllers have
their heating stage 1 linked to digital output DO1 (PWM control) and
their cooling stage 1 linked to digital output DO2 (PWM control).
The control circuits can be configured to directly or inversely control the outputs.
In inverted mode, the output and/or the valve is regulated from 100 % to 0 %.
This can be set separately for each stage in the configuration parameters.
100%
HEATING
STAGE 2
0%
-
2°C /
3.6°F
fSP
Note:
RYM610 = RYMASKON 6 10 has max. 3x 0-10 V DC outputs
RYM 620/630 = RYMASKON 620/630 has max. 2x 0-10V DC outputs
RYM 640/660 = RYMASKON 640/660 ha s max. 2 x PWM 24V outputs
There is a "dead zone" (HDz+CDz) between heating stage 1 and cooling stage 1. P control in the "dead zone"
results in a heating and cooling consumption of 0 %. PI control in the "dead zone" regulates the heating and
cooling consumption to 0 % if the actual temperature is in that range for a longer period of time. The "dead zone"
tolerates variations in the target temperature range without opening the heating or cooling valves. The controller
has an integrated lock preventing simultaneous heating and cooling consumption.
Use HDz (Heating Deadzone) and CDz (Cooling Deadzone) to asymmetrically set the "dead zone" left and right of
the calculated setpoint calcSP. In some cases it may be important for the cooling process to respond more quickly
than the heating process if the actual temperature deviates from the setpoint.
NOTE: Conceptually, calcSP – HDz is the effective target temperature for heating and calcSP + CDz the effective
target temperature for cooling. It is easier for the user to configure and calculate a single setpoint. The
dead zone limits are configured during commissioning to specify effective heating and cooling setpoints.
Users can adjust the target temperature using the arrow keys UP and DOWN.
The target temperature/dead zone changes as follows depending on the operating modes:
• Comfort mode (standard mode): The target temperature is adjusted by the users or specified via the bus and
shown on display. The calculated target temperature (calcSP) consists of the nominal target temperature and
the setting adjusted by the user on the display. The dead zone is adjusted according to the parameters to
"Heating DZ COMFORT" (HDz) and "Cooling DZ COMFORT" (CDz). The possible adjustment range is limited by
the parameter "SP Adj. Max" and "SP Adj. Min." (default ±3°C).
• ECO mode: The nominal target temperature remains unchanged. Adjustments made by users are
disabled and the dead zone is adjusted to "Heating DZ ECO" (eHDz) and "Cooling DZ ECO" (eCDz)
according to the parameters.
• OFF mode: The control ensures that the configured antifreeze-setpoint is met (fSP).
Adjustments made by users are disabled.
NOTE: If limit value control is enabled, the set upper and lower limits move the effective and/or calculated target
temperature as required (see chapter "Limit value control").
® 610/620/630 controllers, the output capacity
HEATING
STAGE 1
calcSP
eHDz eCDz
ECO Deadzone
14
COOLING COOLING
STAGE 1 STAGE 2
+
MEASURED
TEMPERATURE
fSP = Frost Setpoint
calcSP = Calculated Setpoint
HDz = COMFORT Heating Deadzone
CDz = COMFORT Cooling Deadzone