Product Overview

The TC-PTBC11 is a Honeywell terminal base with screw clamps designed for industrial automation systems. It provides a secure connection point for I/O modules, featuring intrinsic safety compliance and robust environmental tolerance. This base supports one module per terminal base and is mechanically keyed before wiring, ensuring correct installation.

Technical Specifications Analysis

The TC-PTBC11 operates with an input voltage rating of Ui ≤ 10Vdc for the intrinsically safe power supply channel. It handles up to 2.5A current with negligible inductance and 1nF capacitance. The terminal base includes 52 screw terminals arranged in one row of 16 and two rows of 18. Power supply terminals +34, -35, +50, -51 allow daisy-chaining power to another base. For I/O modules, Ui ≤ 30Vdc and Ii ≤ 100mA apply. The internal bus uses a vendor-specific 16-pole plug and socket with Ui ≤ 10Vdc and Ii ≤ 400mA. Galvanic isolation meets DIN EN 50020 standards, with isolation voltage determined by the I/O module. Operating temperature ranges from -20°C to 70°C, storage from -20°C to 100°C, and maximum relative humidity is 95% non-condensing. It withstands pollution gas test level G3 per ISA-S71.04-1985, shock of 15g peak for 11ms, and vibration of 2g at 10Hz to 500Hz per IEC 68-2-6. Protection class is IP20, requiring a separate IP54 or better housing for field installation. Weight is 0.228 kg (0.50 lb), dimensions with I/O module are 92 x 94 x 94 mm (3.6 x 3.7 x 3.7 inches). Wire cross section ranges from 0.2 to 2.5 mm², with up to two 1.5 mm² cables per terminal. Terminal screws are M3, requiring a 3.5mm x 0.5mm screwdriver.

Application Scenarios & Usage Methods

In oil and gas refineries, the TC-PTBC11 connects intrinsically safe I/O modules to monitor pressure and temperature sensors in hazardous areas. Its intrinsic safety ratings (Ui ≤ 10Vdc, Ii ≤ 2.5A) ensure safe operation in explosive environments. Use the daisy-chain terminals (+50, -51) to power multiple bases from a single supply, simplifying wiring. In chemical plants, mount the base in an IP54 cabinet to protect against corrosive gases, leveraging its G3 pollution resistance. For process control, connect field devices to the 52 screw terminals, ensuring proper mechanical keying before wiring to prevent module mismatch.

Installation Guide & Packing List

Install the TC-PTBC11 on a DIN rail in a suitable enclosure. Ensure the ambient temperature stays within -20°C to 70°C and humidity below 95% non-condensing. Use M3 terminal screws with a 3.5mm x 0.5mm screwdriver for wire connections. Strip wires to 0.2 to 2.5 mm² cross section, and do not exceed two 1.5 mm² cables per terminal. Mechanically key the base before wiring to match the I/O module. For EMC compliance, mount in a cabinet with a copper seal and install ferrites on power supply and ControlNet coax cables. The package includes one Honeywell TC-PTBC11 terminal base with screw clamps. No additional accessories are included.

Purchasing Advice

When selecting the TC-PTBC11, verify that your I/O module matches the mechanical keying and electrical specifications (Ui ≤ 30Vdc, Ii ≤ 100mA). This base supports one module per unit, so plan your system layout accordingly. For hazardous area applications, confirm that your installation meets ATEX requirements (II 2G EEx ia IIC T4). PetroPartsOnline offers genuine Honeywell TC-PTBC11 units with fast shipping and competitive pricing. Check your required wire cross section and terminal count to ensure compatibility.

Repair & Maintenance Tips

Regularly inspect the TC-PTBC11 for loose terminal screws or signs of corrosion, especially in high-humidity or polluted environments. Clean the base with a dry cloth; avoid solvents that may damage the plastic housing. Store the unit in a clean, dry area within -20°C to 100°C. Test intrinsic safety parameters periodically using a calibrated meter to ensure Ui, Ii, and Ci remain within limits. Replace the base if any terminals are damaged or if the mechanical keying becomes worn.

Frequently Asked Questions (FAQs)

Q: What is the operating temperature range of the TC-PTBC11?

A: The TC-PTBC11 operates from -20°C to 70°C (-4°F to 158°F).

Q: How many terminals does the TC-PTBC11 have?

A: It has 52 screw terminals: one row of 16 and two rows of 18.

Q: Can I daisy-chain power to another terminal base?

A: Yes, use terminals +50 and -51 to daisy-chain power to another TC-PTBC11 base.

Q: What is the protection class of the TC-PTBC11?

A: It is IP20, so for field installation, you must use a separate housing with IP54 or better.

Q: What wire cross section does the TC-PTBC11 accept?

A: It accepts 0.2 to 2.5 mm² wires, with up to two 1.5 mm² cables per terminal.