Technical Specifications:

• Input Channels: 4 universal inputs (TC, RTD, mV, V, mA)
• Output Type: Voltage pulse output (110 = pulse output configuration)
• Communication: None (00 = no communication option)
• Power Supply: 100–240 V AC (50/60 Hz) or 24 V DC
• Control Output: Voltage pulse output (open collector, 12 V DC, max 30 mA)
• Pulse Output Specifications: Frequency 0–1000 Hz, duty cycle 50%, open collector output
• Accuracy: ±0.1% of reading + 1 digit (DC input)
• Display: 5-digit, 7-segment red LED with 14 mm digit height
• Control Modes: ON/OFF control, PID control (automatic tuning)
• Response Time: 200 ms (typ.)
• Operating Temperature: 0 to 55 °C (32 to 131 °F)
• Panel Cutout: 96 × 96 mm (1/4 DIN)
• Depth: 108 mm (4.25 in)
• Weight: Approximately 450 g (0.99 lb)
• Alarm Outputs: 2 alarm outputs (SP, LH, LL, DH, DL, deviation)

Functional Features:

• Heater Burnout Alarm (HBA): Detects open circuit in heating elements
• Loop Break Alarm (LBA): Detects sensor disconnection
• Pulse Output: Proportional to PV or SP for flow totalization or batch counting
• Event Sequence Recording: Logs up to 1000 events with timestamps
• Auto/Manual Switching: Seamless transfer between automatic and manual control
• Remote Setpoint (RSP): External setpoint via analog input
• Manual Reset Function: Operator-initiated reset after alarm conditions

Performance Parameters:

• Input Impedance (Voltage): 10 MΩ minimum
• Input Impedance (Current): 250 Ω (for 4–20 mA)
• Pulse Output Voltage: 12 V DC (open collector, max 30 mA sink)
• Pulse Output Frequency: 0–1000 Hz (proportional to PV or SP)
• Insulation Resistance: 100 MΩ minimum at 500 V DC
• Dielectric Strength: 1500 V AC for 1 minute (input to output to power)
• IP Rating: IP65 (front panel), IP20 (rear)
• EMC Compliance: EN 61326-1, EN 61000-6-2, EN 61000-6-4

Structural Features:

• 1/4 DIN (96 × 96 mm) front panel
• Snap-in mounting design
• Screw terminal connections on rear panel
• Dual-row terminal block for input, output, and pulse wiring
• Transparent front cover with LED display window

Working Principle:
The UT55A-040-110 receives process signals on 4 universal inputs. The internal PID controller compares PV to SP and generates a control deviation. The voltage pulse output generates pulses at a frequency proportional to the PV or SP value (0–1000 Hz). These pulses can be counted by a remote totalizer or flow computer to accumulate total flow or batch count. The HBA and LBA functions continuously monitor input circuit integrity.

Advantage Highlights:

• Pulse Output for Totalization: Direct pulse output enables flow totalization without external converters
• 4 Universal Inputs: Monitor up to 4 process variables simultaneously
• Auto-Tuning PID: Eliminates manual PID parameter adjustment
• HBA Function: Unique heater burnout detection prevents undetected sensor failures
• High Accuracy: ±0.1% reading accuracy

Applicable Industries:

• Chemical batch processing (pulse counting for batch totalization)
• Water flow measurement (pulse-to-flow conversion)
• HVAC energy metering
• Food and beverage batch control
• Pharmaceutical batch recording

Installation Requirements:

• Panel cutout: 92 × 92 mm minimum, 96 × 96 mm nominal
• Mounting depth clearance: 108 mm from front of panel
• Use shielded cables for mV and thermocouple inputs
• Ground the pulse output shield at the receiving device end
• Ensure ambient temperature remains within 0 to 55 °C

Usage Precautions:

• Configure pulse output scaling (pulses per unit) to match the receiving totalizer
• Do not exceed 30 mA sink current on the open collector pulse output
• Verify input type configuration matches actual sensor type
• Calibrate annually to maintain ±0.1% accuracy
• Ensure the receiving device has appropriate pull-up resistor for open collector output