G168-0001 250VAC 30VDC 120VAC 28VDC 1N4006 24VDC 300VAC 1800VDC EN50081-1

SLIMPAK® G168-0001 AC Input Field Configurable Limit Alarm Provides Relay Contact Closures at a Preset AC Input Level

ULTRA SLIMPAK® G168-0001 G168-0001 AC Input Field Configurable Limit Alarm Provides Relay Contact Closures at a Preset AC Input Level Description Benefits Field Configurable Input Ranges The Ultra Slim Pak G168 is a DIN rail mount, DC powered, AC voltage or current input limit alarm with dual setpoints and two contact closure outputs. The field configurable input and alarm functions offer flexible setpoint capability. Input voltage spans from 100mV to 250VAC 250VAC and input current spans from 10mA to 100mA AC can be field configured. For current input spans of 1 to 5 Amps a 0.1 Ohm (5W) shunt resistor (Model# C006) is available. Setpoints Programmable HI or LO, The G168 is configurable as a single or dual setpoint alarm, with HI or LO trips and failsafe or nonfailsafe operation. Also included are adjustable deadbands (0.25 to 5% of full scale input) for each Failsafe or Non-Failsafe setpoint. The G168 will accept any DC voltage between 9 and 30VDC 30VDC. Ultra Slim Housing for High Density Installations LED Trip and Input Indicators Flexible Power Supply Accepts 9 to 30 VDC ASIC Technology Diagnostic LEDS The G168 is equipped with three front panel LEDs. The dual function green LED is labeled INPUT and indicates line power and input signal status. Active DC power is indicated by an illuminated LED. If this LED is off, check DC power and the wiring connection. If the input signal is more than 110% of the full scale range, the LED will flash at 8 Hz. Below 0%, it flashes at 4 Hz. Two red LEDs indicate the relay state for each setpoint. An illuminated red LED indicates the tripped condition. Output The G168 is equipped with two SPDT (form C) relays, rated at 120VAC 120VAC or 28VDC 28VDC at 5 Amperes. Each of these relays is independently controlled by the field configurable setpoint and deadband. Operation The field configurable G168 limit alarm setpoints can be configured for HI or LO, failsafe or nonfailsafe operation. Each of the setpoints have a respective HI or LO deadband. In a tripped condition, the setpoint is exceeded and the appropriate red LED will illuminate. The trip will reset only when the process falls below the HI deadband or rises above the LO deadband (see Figure 1). For proper deadband operation, the HI setpoint must always be set above the LO setpoint. In failsafe operation, the relay is energized when the process is below the HI setpoint or above the LO setpoint (opposite for non-failsafe). In the failsafe mode, a power failure results in an alarm state output. Calibration Illustrating LO Setpoint Illustrating HI Setpoint Setpoint Process (% of Span) 50 Relay Trips (LED Red) Relay returns to its untripped condition (LED off) } 5% Deadband 25 Note: To maximize thermal stability, final calibration should be performed in the operation installation, allowing approximately 1 to 2 hours for warm up and thermal equilibrium of the system. } 5% Deadband Relay Trips (LED Red) Relay returns to its untripped condition (LED off) Time Figure 1: Limit alarm operation and effect of deadband. Dynamic Circuitry in the G168 prevents false trips by repeatedly sampling the input. The input must remain beyond the setpoint for 100 milliseconds, uninterrupted, to qualify as a valid trip condition. Likewise, the input must fall outside the deadband and remain there for 100 milliseconds to return the alarm to an untripped condition. This results in a "dynamic deadband" (based on time) in addition to the normal deadband. 1. After configuring the dip switches, connect the input to a calibrated AC source and apply power. Refer to the terminal wiring (Figure 6). 2. Setpoint: set deadband at its minimum (fully counterclockwise) before adjusting the setpoint. With the desired trip input applied, adjust the setpoint until the relay trips. For HI trip calibration, start with the setpoint above the desired trip (fully clockwise). For LO trip calibration, start below the desired trip (fully counterclockwise). Relay Protection & EMI Suppression When switching inductive loads, maximum relay life and transient EMI suppression is achieved using external protection (see Figures 2 and 3). Place all protection devices directly across the load and minimize all lead lengths. For AC inductive loads, place a properly rated MOV across the load in parallel with a series RC snubber. Use a 0.01 to 0.1uF pulse film capacitor (foil polypropylene recommended) of sufficient voltage, and a 47 ohm, 1/2W carbon resistor. For DC inductive loads, place a diode across the load (PRV > DC supply, 1N4006 1N4006 recommended) with (+) to cathode and (-) to anode (the RC snubber is an optional enhancement). 3. Deadband: Set deadband to its minimum (fully counterclockwise). Set the setpoint to the desired trip. Adjust the input until the relay trips. Readjust deadband to 5% (fully clockwise). Set the input signal to the desired deadband position. Slowly adjust deadband until the relay untrips Configuration Unless otherwise specified, the factory presets the Model G168 as follows: Input: Range: Output: Trip: Failsafe: Deadband: Voltage 0-500mVAC Dual, SPDT A:HI, B:LO No A, B: 0.25% + Po we r Po we r - Lo a d Re la y C o nta c ts Lo a d Re la y C o nta c ts MO V D iod e The DC power input accepts any DC source between 9 and 30V; typically a 12V or 24VDC 24VDC source is used (see Accessories). (o p tiona l) 47 ohm 1/2W For other I/O ranges, refer to Table 1 and Figure 4 to reconfigure switches SW1 and SW2 for the desired input type, range and function. 47 ohm 1/2W 0.1uF Film 0.1uF Film Figure 2: DC Inductive Loads Figure 3: AC Inductive Loads Table 1: G168 Input Range Settings Table 2: G168 Trip Settings 1. With DC power off, position input switch "SW1-9, 10" for voltage or current. 2. Set position 1 through 8 of "SW1" for the desired input range (see Table 1). 3. Set position 1 and 2 of "SW2" to ON for a HI trip setpoint or OFF for a LO trip (see Figure 4). Ranges Voltage Selector SW1 Current 1 2 3 4 5 6 7 Function 8 9 10mA 200mV 20mA 3 Trip A HI 500mV 50mA Non-Failsafe 1V 100mA 2V 5V 10V 20V 50V 100V 200V 250V Input Type Current Voltage Key: 2 Trip B HI 100mV 4. Set position 4 of "SW2" to ON for nonfailsafe operation or OFF for failsafe operation (e.g., alarm trips when power fails). Selector SW2 1 10 = 1 = ON or Closed Key: = 1 = ON or Closed 4 "B" LO Trip Off "B" HI Trip On "A" LO Trip Off "A" HI Trip On Not Used Failsafe Off Non-failsafe On Not Used Not Used Figure 4: G168 Function Selection Switch-Settings (SW4) Factory Default Settings Figure 5: G168 Factory Calibration; 0-500mV, A-HI/B-LO, Non-Failsafe Figure 6: G168 Wiring Diagram Note: All Ultra SlimPak modules are designed to operate in ambient temperatures from 0 to 55°C when mounted on a horizontal DIN rail. If five or more modules are mounted on a vertical rail, circulating air or model HS01 Heat Sink is recommended. Refer to HS01 Technical Bulletin (#721-0549-00) or contact the factory for assistance. Figure 7: Mounting Multiple Modules Specifications Inputs Voltage Input Range: 100mV to 250VAC 250VAC Impedance: >100K Ohms Overvoltage: 300VAC 300VAC, max. Current Input Range: 10mA to 100mA AC Impedance: 20 Ohms, typical Overcurrent: 200mA AC, max. Overvoltage: 60V peak (protected by self resetting fuse) Frequency Range: 40 to 400Hz Common Mode (Input to Ground) 1800VDC 1800VDC, max. LED Indicators Input Range (Green) >110% input: 8Hz flash Setpoint (Red) Tripped: Solid red Safe: Off Limit Differentials (Deadbands) >50mV/5mA: 0.25% to 5% of span