HONEYWELL FC-TPSU-2430 CC V1.1 DC/DC Converter Module

Functionality

The TPSU-2430 is a DC/DC converter module that provides an isolated 30 V DC / 1 A output. It powers field termination assemblies (FTAs) such as the TSAI-1620m and TSHART-1620m. Additionally, the module offers voltage monitoring capabilities, including local LED indications and alarm functions via a read-back relay contact.

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Key Features

1. Voltage Monitoring:
   • Local LED indication for output voltage status.
   • Read-back relay contact closes when output voltage is within the acceptable range.
2. Galvanic Isolation:
   • Isolates input, output, and relay contact connections for safety and system integrity.
3. Robust Design:
   • Short-circuit proof output with overvoltage protection.
   • High efficiency (>75%) with natural convection cooling.
4. Safety Compliance:
   • Certified for SIL3 applications.
   • Meets standards such as CE, TUV, UL, CSA, and FM.
5. Mounting Options:
   • DIN rail mounting (TS32/TS35).
   • Can be installed horizontally or vertically.

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Connections

Input Terminals

Terminal	Function
1	Read-back contact
2	Read-back contact
3	24 V DC IN (+)
4	24 V DC IN (–)

Output Terminals

Terminal	Function
1A, 2A, … 6A	30 V DC OUT
1B, 2B, … 6B	0 V DC OUT or Ground1

Note: The “0 V DC OUT” must be connected to ground or to a dedicated Earth Leakage Detector (ELD) for predictable system behavior in case of a short to earth.

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Specifications

General

Parameter	Specification
Type Numbers	FS-TPSU-2430, FC-TPSU-2430
Safety Class	SIL3
MTBF	Approximately 400,000 hours

Electrical

Parameter	Specification
Input Voltage	Nominal: 24 V DC; Range: 18–36 V DC
Inrush Current	≤ 4 A
Output Voltage	30 V DC ± 0.25 V
Output Current	1 A (short-circuit proof)
Ripple (0–30 MHz)	< 0.1 V RMS
Short-Circuit Current	< 3.3 A
Overvoltage Protection	33 V
Efficiency	> 75%

Environmental

Parameter	Specification
Operating Temperature	-5°C to +70°C (23°F to 158°F)
Storage Temperature	-40°C to +85°C (-40°F to +185°F)
Altitude	≤ 2000 m
Cooling	Natural convection

Physical

Parameter	Specification
Dimensions	150 × 70 × 62.3 mm (5.91 × 2.76 × 2.45 in)
Fuse Rating	3.15 A (Schurter PN: 0001.2509)

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Alarm Functions

1. Overvoltage Protection:
   • Dual, two-fault-tolerant design.
   • Restart requires removal of 24 V DC power.
2. Undervoltage Detection:
   • LED turns ON if output voltage is within acceptable range.
   • Relay contact closes at 27.5 V DC (typical).

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