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PTC-20
1/16 DIN Multi-Programmable LED Timers, 4-Digit Dual Line Display
- 1/16 DIN Cutout
- Three Different Models: Standard, High Performance and Repeat Cycle
- Four-Digit Dual Line Display Indicates Set Value and Time Value
- All Models Offer Multiple Field Programmable Modes for Operation and Time Ranges
Product Overview
- Accuracy ± 0.01 %
- Activation Time 21 ms
- Control Mode Repeat Cycle: Batch stop, batch continue and interval
- Cutout Dimensions 45 x 45 mm
- Display Note Dual-line, 4-digit, 7-segment LED, 8 mm H (0.31")
- Display Type Dual 4 Digit LED
- Enclosure Ratings IP65
- Form factor 1/16 DIN
- Frequency 50/60 Hz
- Height 48 mm
- Humidity Range 5 to 95% RH, non-condensing
- Impedance 10 kΩ
- Inhibit NPN or Dry Contact
- Inputs Start and Reset NPN or dry contact
- Length 85 mm
- Measurement Type Time
- Memory Non-volatile
- Operating Temperature, Max 55 °C
- Operating Temperature, Min 0 °C
- Power Consumption 10 VA
- Resolution Settable for time values in hours/minutes/seconds ranges
- Series ID PTC-20
- Storage Temperature, Max 90 °C
- Storage Temperature, Min -40 °C
- Supply Power Type AC
- Supply Voltage 90 to 240 Vac
- Timer Range Hours, minutes, seconds; hours, minutes; minutes, seconds
- Weight 100 g
- Width 48 mm
Supported Applications
The Omega PTC-20 Series comprises 1/16 DIN multi-programmable LED timers designed for industrial automation and control applications. The series includes three distinct models: the PTC-21 (Standard timer), PTC-22 (Repeat-cycle timer), and PTC-23 (High-performance timer). These devices feature a 4-digit dual-line display and are engineered to manage timing sequences in panel-mounted or DIN rail configurations.
Important safety note: The bundle explicitly states that these products are not designed for use in, and should not be used for, patient-connected applications.
Operating Conditions & Performance
The PTC-20 Series operates on a universal AC power supply of 90 to 264 Vac at 50/60 Hz. The units are rated for an ambient operating temperature range of 0 to 55°C (32 to 131°F) and can be stored in environments ranging from -40 to 90°C (-40 to 194°F). Humidity tolerance is specified as 5 to 95% RH, non-condensing.
Performance specifications include a timing accuracy of ±0.01%. The activation time for units powered by 85 to 264 Vac is listed at 21 ms in the general specification table. For relay outputs on specific models, latency is documented as 15 ms or less.
The series carries UL US and CE approvals and includes a standard 1-year warranty. An extended OMEGACARE™ warranty program (OCW-2) extends coverage to a total of 3 years for parts, labor, and equivalent loaners.
Physical & Environmental Ratings
- Housing Rating: NEMA 4 (IP65)
- Dimensions: 48 H x 48 W x 85 mm D (1.89 x 1.89 x 3.35")
- Cutout Size: Panel-mount cutout of 45 x 45 mm (1.77 x 1.77") or DIN rail mounting.
- Weight: 100 g (3.5 oz)
Configuration Options
The PTC-20 Series offers configurable output types and operating modes depending on the specific model selected. All models utilize an industry-standard 11-pin socket connection, which is required for operation (part number PTC-21-SOCKET). The front panel includes numeric keys (1–4), Edit (E) and Program (P) keys, I/O status indicators (IN, O1, O2), a Time Value display, a Time Range Indicator (H, M, S), and a Set Value display.
Output Configurations
The series supports the following output signal types:
- Relay: 2 SPDT contacts rated at 5 A with up to 15 ms latency (PTC-22 and PTC-23).
- Transistor: NPN.
- Open Collector: 30 Vdc, 30 mA max; available as opto-isolated on the high-performance model.
Operating Modes & Programming
The timers support multiple field-programmable modes. The PTC-21 base model supports On-Delay (OndL), Off Delay (OFdL), Interval (int), Repeat Cycle (CYCL), and Delay/Interval (dint). The high-performance PTC-23 offers 17 different operating modes.
Programmable parameters include:
- Time Range: Seconds, Minutes, Hours, Minutes:Seconds, or Hours:Minutes.
- Decimal Position: No decimal point (0), 10ths position (0.0), or Hundredths position (0.00).
- Timing Direction: Increment from zero to set value (uP) or decrement from set value to zero (dn).
- Power Reset Enable: Options to reset upon power reapplication or continue timing after interruption.
- Security Level: Configurable levels ranging from 0 (Full Access) to 3 (SP Locked Out with restricted Program Mode access).
Key Product Differences
The PTC-20 Series is differentiated by three primary models, each offering specific functional capabilities:
- PTC-21 (Standard Timer): Features a timed relay output configured as DPDT (5 A). Operating modes shown include On-delay, off-delay, on-delay (interval), interval, and repeat cycle.
- PTC-22 (Repeat-Cycle Timer): Designed for batch operations. Includes an inhibit input (NPN or dry contact) and supports outputs of 2 SPDT relays (5 A, 15 ms latency), NPN transistor, or Open Collector (30 Vdc, 30 mA max). Operating modes include Batch stop, batch continue, and interval.
- PTC-23 (High-Performance Timer): Offers the broadest functionality with 17 different operating modes. Outputs include 2 SPDT relays (5 A, 15 ms max latency), NPN transistor, or opto-isolated Open Collector (30 Vdc, 30 mA max). Includes an inhibit input compatible with NPN or dry contact.
All models require the PTC-21-SOCKET accessory for installation. The series is manufactured in the USA and is Year 2000 compliant.
