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Details physical dimensions and cut-out specifications for panel mounting the device.
Details how to connect input signals and their associated functions.
Describes the terminal connections for the two relay outputs.
Explains how to connect the power supply to the device.
Instructions for programming the timer and counter setpoints.
Guide to accessing and setting up software configuration parameters.
Provides critical warnings regarding installation, power, and connections.
The Gefran 550 is a microprocessor-based quartz timer/counter designed for a variety of industrial applications, offering both timing and counting functionalities. Its compact 1/16 DIN size makes it suitable for panel mounting, and it can be easily integrated into existing systems, either individually or in multiple units arranged in rows or columns.
The Gefran 550 operates as either a timer or a counter, with flexible configuration options to suit specific application needs. As a timer, it can perform single, double, cyclical, and delay timing functions. In single timer mode, the relay energizes at the end of a set time (T1) and de-energizes when the input signal is removed. Double timer modes involve two distinct time periods (T1 and T2), with relay actions tied to the completion of these periods. Cyclical timers repeat their timing sequence, while delay timers introduce a pause before an action occurs. The device can also function as a revolution check, measuring the time between consecutive pulses of an input signal and activating relays based on whether this interval falls within or outside defined limits (T1 and T2). This is particularly useful for monitoring speed or frequency.
As a counter, the Gefran 550 can operate as a standard counter, non-cyclical monostable counter, or cyclical monostable counter, with or without count blocking. In standard counter mode, it counts down from a set value (SP1) to zero, with relay activation upon reaching zero. Non-cyclical monostable counters count down and remain energized for a set time (SP2) after reaching zero, even continuing to count into negative values if the input signal persists. Cyclical monostable counters, on the other hand, restart their countdown from the beginning after reaching zero and remaining energized for SP2. The device also supports non-cyclical and cyclical double counter modes, involving two setpoint values (SP1 and SP2) and different relay behaviors during the countdown phases. The maximum counting frequency is 100Hz.
The device features two inputs, IN1 and IN2, which can be configured for various functions. IN1 can serve as a start/stop or reset input for the timer, or as a counter input. It accepts signals from voltage-free contacts, open collectors (24Vdc/1mA), or AC voltage, with the AC voltage matching the instrument's power supply. IN2, when IN1 is not in AC voltage control, can be used for timer reset, counter start/reset, frequency pulses from a solid-state sensor for revolution checks, or delay functions. The flexibility of these inputs allows for complex control logic.
The Gefran 550 provides two relay outputs, OUT1 and OUT2. OUT1 is a standard normally open (NO) contact, while OUT2 can be configured as either normally open (NO) or normally closed (NC) via a jumper. These relays can be programmed to activate or deactivate based on the timer or counter's state, offering versatile control over external equipment. The output functions can be set to various modes, including delayed energizing, instantaneous activation, in-phase operation, or opposition, depending on the specific application requirements.
The device's faceplate includes a display (A) that shows the real-time value of the current time or count. During configuration, it alternately flashes descriptions of functions and parameters with their values. A flashing decimal point on the right indicates that time 2/count 2 is selected or active. LED signals (E) indicate the status of the output relays (OUT1, OUT2) and the Input 1 signal (K), providing immediate visual feedback on the device's operation.
The Gefran 550 is designed for user-friendly operation and configuration. The "F" (Function) button (B) is central to accessing and confirming settings. A short press of the F button allows scrolling through functions during the configuration phase, while a 5-second press enters or exits this phase. If a change is made and the F button is not pushed to confirm, the new value is automatically stored after 5 seconds. The raise/lower buttons (D/C) are used to adjust values and select options. Pressing these buttons for an extended period increases the speed of adjustment. During normal operation, Time 1/Count 1 setpoints can be changed directly using these buttons. If no button is pressed for about 5 seconds, the display reverts to the current active time. During configuration, the raise/lower buttons can temporarily stop the alternating display of description and value, showing the value for about 5 seconds.
Hardware configuration involves setting jumpers on the power board and CPU-inputs board. The power supply voltage (110/220Vac or 24/240Vac) and AC/DC voltage selection are made via jumpers on the power board. The CPU-inputs board allows for hardware protection of the configuration, enabling or disabling access to settings, and selecting the contact type for relay R2 (NO or NC).
Software configuration is performed through a single procedure involving 9 settable parameters. Accessing this phase requires pressing the F key until "CFG" appears on the display. Parameters can then be scrolled through, and their values adjusted using the raise/lower buttons. The device also offers different software protection levels (0-2) to restrict access to setpoints and configuration, enhancing security in industrial environments.
The device supports automatic change of time scales (only for scales in seconds) based on the "LoG" (Logic) setting for digital input IN2. This feature simplifies operation by automatically adjusting the display resolution as needed.
Maintenance and repairs for the Gefran 550 should only be performed by trained and specialized personnel. Before accessing internal parts, it is crucial to cut power to the instrument.
Cleaning the device requires caution. The case should not be cleaned with hydrocarbon-based solvents such as trichloroethylene or gasoline, as these can compromise the instrument's mechanical reliability. Instead, a clean cloth moistened with ethyl alcohol or water should be used for cleaning external plastic parts.
The device includes an "EEP" alarm message, which indicates an EEPROM memory fault. If this message persists, the instrument should be sent back to the factory for repair.
Gefran provides a technical service department to address defects. However, defects arising from use not conforming to the instructions in the manual are excluded from the warranty. This underscores the importance of adhering to the provided installation and usage guidelines to ensure the longevity and proper functioning of the device.
General| Supply Voltage | 24-240V AC/DC |
|---|---|
| Supply Voltage Tolerance | -15% to +10% |
| Output | Relay |
| Output Type | Relay |
| Contact Rating | 8A / 250VAC |
| Timing Range | 0.1s to 100h |
