
Manual of SR288 intelligent controller
5
Status description
Code
Lighting
Blinking
Exceed the maximum temperature of storage
SMX
Running of storage emergency shutdown
function
Running of collector emergency shutdown
function
CEM
+
Collector Cooling
OCCO
Tank Cooling
OSTC
System Cooling
OSYC
Start of anti-freezing function
OCFR
Running of anti-freezing function
OCFR
Collector minimum temperature
OCMI
Slow blink
2. Overview
2.1 Technical data
Inputs:
1 * PT1000 temperature sensor input
5 * NTC10K, B=3950 temperature sensor input
1 * Grundfos Direct Sensor TM (VFS) simulation input
1 * FRT rotary vane type electronic flow meter
1 * 485 communication port
Outputs:
2 * Electromagnetic relay, maximum current 2A
2 * Semiconductor relay, maximum current 2A
1 * Potential-free extra-low voltage relay (on/off signal), possible combined
with HR controller
2 * PWM variable frequency output (on/off switchable, 0-10V)
Functions:
operating hours counter, tube collector function, thermostat function, pump
speed control, heat quantity measurement, external heat exchange, adjustable system
parameters and optional functions (menu-driven), balance and diagnostics
Power supply:
100…240V ~(50…60Hz)
Rated impulse voltage:
2.5KV
485 current supply
:
60mA
Housing
:
Plastic ABS
Mounting
:
Wall mounting