Summary of Contents for Amit AMR-OP87
- Page 1 VZT01 Air-handling control via terminal AMR-OP87 RevA Operation manual Version 1.01 ta_op87_vzt01_g_en_101...
- Page 2 VZT01 AMiT, spol. s r. o. does not provide any warranty concerning the contents of this publication and reserves the right to change the documentation without any obligation to inform anyone or any authority. This document can be copied and redistributed under the following conditions: 1.
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Page 3: Table Of Contents
VZT01 Contents Revision history ....................4 Related documentation ................... 4 Introduction ..................5 Programme activity description ............6 Control system inputs and outputs ..............6 2.1.1 Connecting inputs and outputs ............... 6 2.1.2 Table of inputs and outputs ................6 Functions ...................... -
Page 4: Revision History
Related documentation Help tab in the EsiDet section of the DetStudio development environment file: Esidet_en.chm AMR-OP87 RevA – Graphic control terminal 7″ – Operation manual file: amr-op87_reva_g_en_xxx.pdf AMRIO-AI8AO8U – Analogue inputs and outputs extension module – Operation manual file: amrio-ai8ao8u_g_en_xxx.pdf AMRIO-AI8RDO8 –... -
Page 5: Introduction
VZT01 Introduction Application ta_op10_vzt01 for control terminal AMR-OP87 RevA with extension modules AMRIO-AI8RDO8 and AMRIO-AI8RDO8 is designed for air-handling control in the following configuration: Fig. 1 – Technological layout two fans (air supply and air exhaust) with power control, ... -
Page 6: Programme Activity Description
VZT01 Programme activity description Control system inputs and outputs 2.1.1 Connecting inputs and outputs Inputs and outputs are connected through extension modules AMRIO-AI8AO8U and AMRIO-AI8RDO8. The control terminal is connected to modules via RS485 line on the COM0 interface, communicates via MODBUS RTU protocol with the following communication parameters: ... -
Page 7: Functions
VZT01 Signal Designation Description Significance Terminals Log. 1 = failure Cooling unit 2 failure Log. 1 = failure Outdoor air filter clogged Log. 1 = failure Indoor air filter clogged Log. 1 = running Air supply fan active FANA Log. 1 = running Exhaust fan active FANI Outputs Inlet fan... -
Page 8: Temperature Setpoint Mode
VZT01 Operation (in modes both ON and AUT) is conditioned by status log. 1 of input The input I may be permission from the fire signalization, manual control ENA. via switch, etc. 2.2.3 Temperature setpoint mode Manual Manually set temperature setpoint. ... -
Page 9: Ahu Start-Up Time
VZT01 2.2.8 AHU start-up time At low outdoor temperature, fans start up with a delay after air-handling is turned on. During the start-up, the heater mixing valve is fully open and the pump is turned on. The goal is to prevent the anti-freezing heater protection from turning on. -
Page 10: Switching Between Heating And Cooling
VZT01 While the system is turned off, the heat-exchanger bypass damper is closed. During startup, the opening of the damper is calculated as 100 - heat-exchanger power. Heat-exchanger frost protection – while the waste air temperature T is low – is ensured by supply fan power correction (chapter 2.2.10 “Fan power control”). -
Page 11: Control Via Terminal
VZT01 Control via terminal The home screen shows the overview of AHU, values of the measured quantities and the controlled drives. Fig. 2 – Home screen Legend Number Significance AHU operation mode AHU status Alarm status Alarm status The text shown varies according to the alarm status: Status Significance A new alarm has occurred, not confirmed yet. - Page 12 VZT01 AHU status Status Significance STOP AHU is turned off. Cause may be the selected mode or an alarm. AHU is turned on, fans are turned off (see chapter 2.2.8 “AHU start-up Rise time time”). AHU is running Heater frost protection is active (see chapter 2.2.5 “Anti-freezing hot- Frost water heater protection”).
- Page 13 VZT01 Fig. 4 – Operation mode and temperature setting It is possible to navigate from the operation mode and temperature setting screen to the parameter setting screen after pressing “Settings” and entering a valid password. The password value is saved in the variable StpPass. Parameters setting screen 1.
- Page 14 VZT01 5. Heater Enhancing the PID controller Heater PID controller integration constant Heater pump rundown time 6. Cooler Maximum difference between external and internal temperature Enhancing the PID controller Heater PID controller integration constant ...
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Page 15: Default Settings
VZT01 Default settings Parameter Default value Operation mode Power in the ON mode [%] Operation time plan, times 12:00 AM, 05:00 AM, 08:00 AM, 12:00 PM, 4:00 PM, 8:00 PM Operation time plan, activation [%] 0, 40, 90, 80, 50, 30 Temperature setpoint mode Manual Manually entered temperature... - Page 16 VZT01 Parameter Default value Action threshold for activating the first level of cooling [%] Action threshold for activating the second level of cooling [%] Action threshold for activating the third level of cooling [%] ta_op87_vzt01_g_en_101 16/18...
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Page 17: Failure List
VZT01 Failure list Failure Significance Low heater temperature Alarm status (log. 0) of signal T . Chapter 2.2.5 “Anti-freezing hot-water heater protection”. Low water temperature behind Decrease of temperature of water returning heater from the heater (T ) below minimum value. Chapter 2.2.5 “Anti-freezing hot-water heater protection”. - Page 18 VZT01 Failure Significance Failure of returning water Fault in measuring temperature of water temperature sensor returning from the heater (T Power supply failure, sensor failure, incorrect setting of input AI4 on AMRIO-AI8AO8U. CO2 concentration sensor failure Fault in measurement of CO concentration in ventilated space.
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