Operation manual of solar controller SR1568
Page 6 of 87
2 Overview
2.1 Controller introduction
TFT colorful screen display
6 * relay outputs
1 * low voltage relay output
7 * sensor inputs
1 * Grundfos Direct Sensor TM (VFS) simulation input
1 * Grundfos Direct Sensor TM (RPS) simulation input
3 * Variable frequency PWM outputs for the speed
control of the high efficiency pump
Data saved on the TF card (Micro SD)
485 communication port
23 systems for choose
2.2 Delivery list
1 * SR1568 controller
1 * accessory bag
1 * user manual
2 * screen and expansion
2 * PT1000 temperature sensor (φ6*50mm,cable length 1.5meter)
5 * NTC10K temperature sensor (φ6*50mm,cable length 3meter)
1 * clamp bag
2.3 Technical data
Input： 2* PT1000 temperature sensors
5* NTC10K, B=3950 temperature sensors
1* Grundfos Direct Sensor TM (VFS type)
1* Grundfos Direct Sensor TM (RPS type)
Output： 3* Electromagnetic relay, Max. current 1A
3* Semiconductor repay, Max. current 1A
1* Potential-free extra-low voltage relay (on/off signal)
3* PWM variable frequency output (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
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