TLA21000 Red Lion Controls, TLA21000 Datasheet - Page 5

• Manufacturer Part Number: TLA21000
• Description: Form-C Limit Relay W/1 Alarm
• Manufacturer: Red Lion Controls
• Type: Temperaturer

Specifications of TLA21000

• Brand/series: TLA Series
• Contact Form: SPST/SPDT
• Dimensions: 49.5mmW×49.5mmH×115.3mmD
• Enclosure Rating: IP65
• Input Type: RTD/Thermocouple
• Ip Rating: IP65
• Memory: EEPROM
• Mounting Type: Panel
• Number Of Outputs: 1
• Output Type: Relay
• Power, Rating: 8 VA
• Primary Type: Controller
• Special Features: EEPROM
• Standards: cURus, CE, FM
• Temperature, Ambient: 0 to +50 °C (Max.)
• Termination: Screw
• Voltage, Rating: 120⁄240 VAC
• Voltage, Supply: 85 to 250 VAC
• Panel Cutout: 1.77" × 1.77" (1⁄16 DIN)
• Power Requirements: 85-250 VAC
• Sealing: NEMA 4X/IP65
• Operating Temperature: 0°C to +50°C
• Lead Free Status / Rohs Status: RoHS Compliant part

wiring connections are made to the rear screw terminals. When wiring the unit,
use the numbers on the label and those embossed on the back of the case, to
identify the position number with the proper function.
Also cabling should conform to appropriate standards of good installation, local
codes and regulations. It is recommended that power supplied to the unit (AC
or DC) be protected by a fuse or circuit breaker. Strip the wire, leaving
approximately 1/4" (6 mm) bare wire exposed (stranded wires should be tinned
with solder). Insert the wire under the clamping washer and tighten the screw
until the wire is clamped tightly.
Caution: Unused terminals are NOT to be used as tie points. Damage to the
POWER WIRING
AC Power
reduce the chance of noise spikes entering the AC line and affecting the TLA,
an AC feed separate from that of the load should be used to power the TLA. Be
certain that the AC power to the TLA is relatively “clean” and within the
variation limit. Connecting power from heavily loaded circuits or circuits that
also power loads that cycle on and off (contacts, relays, motors, etc.), should be
avoided.
DC Power
DC+ and DC- respectively.
SIGNAL WIRING
Thermocouple
and tight. If the thermocouple probe cannot be connected directly to the TLA,
thermocouple wire or thermocouple extension-grade wire must be used to
extend the connection points (copper wire does not work). Always refer to the
thermocouple manufacturer’s recommendations for mounting, temperature
range, shielding, etc. For multi-probe temperature averaging applications, two
or more thermocouple probes may be connected to the TLA (always use the
same type). Paralleling a single thermocouple to more than one TLA is not
recommended. Generally, the red wire from the thermocouple is negative and
connected to the TLA’s common.
2.0 WIRING THE TLA
After the unit has been mechanically mounted, it is ready to be wired. All
All conductors should meet voltage and current ratings for each terminal.
TLA may result if these terminals are used.
Primary AC power is connected to terminals #11 and #12, labeled AC. To
DC Power (18 to 36 VDC) is connected to terminals #11 and #12 labeled
When connecting the thermocouple, be certain that the connections are clean
CAUTION: Observe proper polarity when connecting DC voltages.
Damage to the unit may occur if polarity is reversed.
Thermocouple Connection
5
RTD
tight. RTD sensors have a higher degree of accuracy and stability than
thermocouple sensors. Most RTD sensors available are the three wire type. The
third wire is a sense lead for canceling the effects of lead resistance of the probe.
Four wire RTD elements may be used by leaving one of the sense leads
disconnected. Two wire RTD sensors may be used in either of two ways:
A) Attach the RTD to terminals #8 and #10. Install a copper sense wire of the
B) Attach the RTD to terminals #8 and #10. Install a shorting wire between
Note: With extended cable runs, be sure the lead resistance is less than 15
RELAY CONNECTIONS
switching of inductive loads, it is good installation practice to install a snubber
across the contactor. Follow the manufacturer's instructions for installation.
Note: Snubber leakage current can cause some electromechanical devices to be
*Terminal numbers are model dependent. See Terminal Configurations for
REMOTE RESET WIRING
guidelines for shield connection.
connected to terminal #6 (REMOTE RESET) and terminal #8 (COMM.).
Sinking open collector logic with less than 0.7 V saturation and off-state leakage
current of less than 1 µA may also be used.
When connecting the RTD, be certain that the connections are clean and
same wire gauge as the RTD leads. Attach one end of the wire at the probe
and the other end to terminal #9. Complete lead wire compensation is
obtained. This is the preferred method.
terminals #9 and #10. A temperature offset error of 2.5°C/ohm of lead
resistance exists. The error may be compensated by programming a
temperature offset.
ohms/lead.
To prolong contact life and suppress electrical noise interference due to the
held ON.
description.
The use of shielded cable is recommended. Follow the EMC installation
Terminal #6 is the Remote Reset. Any form of mechanical switch may be
RTD Connection