Why does my TECSYSTEM T-154 Temperature Controller display FCC on all sensors?
If all sensors display FCC, the terminal block might be upside-down due to wrong wiring connections. Please, check the terminal block.
What to do if my TECSYSTEM T-154 alarm and trip relays energize when switching the unit on-off?
If the alarm and trip relays energize when switching the unit on and off, strong electrical noise may be present on the power line. Try installing a transient suppressor (PT-73). Also, ensure the shield of the sensor cable is connected to the panel ground. Consider installing shielded cable (Mod. CT-ES) or twisting the sensor conductors.
What to do if one of the 3/4 channels of TECSYSTEM Temperature Controller is indicating fault and displaying FOC/FCC?
If one of the channels is indicating a fault and displaying FOC/FCC, check the sensor connections and look for any damaged sensors. If a sensor is damaged, replace it.
How to fix a TECSYSTEM Temperature Controller that suddenly activates the trip relay with normal operating temperature?
If the trip relay suddenly activates with a normal operating temperature, it could be due to a defective sensor (Fcd). Replace the sensor.
What to do if the temperature indicated by one or more channels of TECSYSTEM Temperature Controller is wrong?
If the temperature indicated by one or more channels is incorrect, the sensors may be defective. Check the sensor resistance with an Ohm meter. If the sensors are OK, return the unit for repair, as it may be calibrated incorrectly.
Why is channel 4 of my TECSYSTEM T-154 indicating fault and displaying FOC when only three Pt100 sensors are connected?
If channel 4 indicates a fault and displays FOC when only three Pt100 sensors are connected, it may be due to wrong programming of the unit. Please, repeat programming.
What to do if my TECSYSTEM T-154 with a control power source of 24 VDC switches off and will not switch back on?
If the unit switches off and won't switch back on with a 24 VDC control power source, check that the input voltage is between 20-24 VDC. Reconnect to a stable source of power. If the unit still does not respond, return it for repair.
How to troubleshoot a TECSYSTEM T-154 Temperature Controller that will not switch on, with control power energized?
If the unit does not switch on even with control power energized, check the terminal block for correct installation and verify the voltage at the terminal block.
General| Brand | TECSYSTEM |
|---|---|
| Model | T-154 |
| Category | Temperature Controller |
| Language | English |
Describes input specifications including sensor types, terminals, protection, and cable compensation.
Details the available alarm relays (ALARM-TRIP, FAN, FAULT) and their output contact capacity.
Covers display features, LEDs, temperature monitoring, alarm thresholds, and programming interface.
Guidance on creating a panel hole and fastening the unit securely.
Information on the universal power supply, voltage range, and ground cable connection.
Wiring recommendations for alarm and fan control relays, including protection suggestions.
Details on connecting Pt100 sensors, including wiring configuration and channel references.
Guidelines for transporting measure signals, including cable requirements and linearization accuracy.
Explains how the unit detects and displays sensor faults like short circuits or open circuits.
Describes temperature monitoring, triggering of alarm/trip relays, and LED indications.
How the unit controls transformer fans based on surveyed temperatures or ambient temperature.
Options for selecting display modes: AUTO, MAN, and T.MAX for temperature and alarm viewing.
Procedure for testing alarm, trip, fault, and cooling relays using the TEST key.
How alarm and trip relays change state at set points and how to reset them.
Warning to disconnect power supply before insulation tests to prevent damage.
Detailed sequence for programming parameters like setpoints, fan control, and sensor diagnostics.
Procedure to regain access to programming if the unit is blocked, involving key presses.
Details the 12-month warranty period, limitations, and conditions for voiding the warranty.
Technical details for the PT100 extension cable, including material, size, and temperature rating.
Provides solutions for issues like unit not switching on, fault indications, and incorrect readings.
Lists the various tests performed on the unit during its production cycle.
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