What to do if TECSYSTEM Temperature Controller channel indicates FOC/FCC fault?
If one of the four channels on your TECSYSTEM Temperature Controller displays an FOC/FCC fault, first check the sensor connections to ensure they are properly connected. Next, inspect the sensors for any signs of damage. If a sensor is damaged, replace it.
How to troubleshoot TECSYSTEM Temperature Controller that won't switch on?
If your TECSYSTEM Temperature Controller does not switch on even with control power supplied, verify the terminal block for correct installation. Also, check for the presence of voltage at the terminal block.
Why is TECSYSTEM Temperature Controller showing wrong temperature?
If the temperature displayed by one or more channels on your TECSYSTEM Temperature Controller is incorrect, it could be due to defective sensors. Check the sensor resistance using an Ohm-meter. If the sensors are not the issue, the unit may be incorrectly calibrated and should be returned for repair.
Why do alarm and trip relays energize when switching TECSYSTEM Temperature Controller on/off?
The alarm and trip relays may energize when switching your TECSYSTEM Temperature Controller on or off because strong electrical noise is being picked up on the power line. To resolve this, ensure the shield of the sensor cable is connected to the panel ground. Additionally, consider installing shielded cable (Mod. CT-ES) or twisting the sensor conductors.
What causes sudden trip relay activation in TECSYSTEM Temperature Controller?
Sudden activation of the trip relay in your TECSYSTEM Temperature Controller, especially when operating temperatures are normal, and one channel is the cause, is likely due to a defective sensor (Fcd). Replace the sensor to resolve this issue.
Why does TECSYSTEM Temperature Controller display FCC on all sensors?
If your TECSYSTEM Temperature Controller shows FCC on all sensors, it is probably caused by wrong wiring connections. Specifically, the terminal block is likely upside-down. Check the terminal block.
General| Brand | TECSYSTEM |
|---|---|
| Model | T2612 |
| Category | Temperature Controller |
| Language | English |
Details power input requirements, voltage selection, and protection.
Describes sensor inputs, types, and protection against electrical noise.
Covers assembly, electrical protection, accuracy, and environmental specifications.
Specifies the physical size and panel cutout dimensions for the unit.
Outlines serial communication capabilities, specifically RS485 Modbus RTU.
Details the 4-20 mA analog output specification and range.
Describes the alarm, trip, and fan relay outputs and their contact capacities.
Explains display features, LED indicators, and user interface controls.
Details voltage selection via jumper and transformer recommendations.
Explains electrical connections for alarm, trip, and fan control relays.
Describes how to correctly connect Pt100 sensors to the unit.
Provides technical specifications for the Pt100 extension cable.
Guidelines for signal cables, including shielding, section, and twisting.
How the unit detects and indicates short-circuited or open sensors.
Describes the FCD function for displaying and signaling damaged sensors.
Details how temperature deviations trigger alarm and trip relays.
Explains fan control based on surveyed temperatures or ambient sensor.
Procedure for programming periodic fan activation for testing.
How to enable/disable the hold function for alarm relays.
Describes modes like HOT, MAN, T.MAX, and SCAN for data display.
How to review entered program values using the PRG key.
Instructions for testing all unit lamps for proper function.
Step-by-step procedure to test alarm, trip, and fan relays.
Method to temporarily exclude the ALARM signal and its behavior.
Explains the buzzer's operation for alarms and how to mute it.
Set the desired alarm and trip thresholds for temperature channels.
Configure fan operation thresholds, modes, and cyclic testing.
Enable/disable sensor fault detection and alarm relay hold.
Configure unit address, baud rate, and parity for communication.
Procedure to regain access if the programming function is blocked.
Details manufacturer's warranty coverage and limitations.
Warning to disconnect power before performing insulation tests.
Explains 4-20mA output connection, load impedance, and signal relation.
Describes the 'Ech' indication for corrupted data and default parameter reloading.
Solutions for when the unit does not switch on.
Diagnosing and resolving sensor fault indications like FOC and FCC.
Addresses unexpected alarm/trip relay activation during power on/off.
Troubleshooting steps for inaccurate temperature measurements.
Resolving sudden trip relay activation with normal operating temperatures.
Introduction to the Modbus RTU serial communication protocol used by the unit.
Details on twisted-pair wiring, polarity, and termination resistors for RS485.
Describes the structure of the asynchronous transmission frame (START, Data, Parity, Stop).
Details the format of questions from the master and answers from the slave.
Explains function codes for reading setpoints/temperatures and writing data.
Details the exception codes returned for incorrect requests.
Lists register addresses for various parameters including setpoints and channel data.
Explains the polynomial and algorithm for CRC-16 calculation.
Defines registers, counters, and symbols used in parameter descriptions.
Outlines the sequential steps for the CRC calculation algorithm.
Provides the precise dimensions for cutting the panel to install the unit.
Identifies terminals for connecting Pt100 sensors (CH1-CH4).
Shows the terminals for the analog 4-20mA output signal.
Locates the terminals for RS485 serial communication interface.
Details terminals for power input, fuses, and fan control outputs.
Identifies terminals for alarm, trip, and fault relay outputs.
Explains the unit's display screen and status LED indicators.
Details the function of each button on the front panel for operation and programming.
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