Foxcroft FX-300-F, Инструкция по эксплуатации

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FX-300-REL
Alarm Limits
The FX-300-REL integrates two limits. All settings for one limit may be altered independently of the
other. Each limit may be set up as a Max. or Min. limit. All limits can be entered in the native unit of the
measurement module to which it is connected (pH, ppm, μS/mS).
Start Timer (Ts)
The start timer may be used to avoid alarms during startup of an unstable process. It is activated when
the input reaches 5%. If the timer is set to 0, supervision is performed without using the start timer.
Reaction Timers (Tr)
Each limit has a corresponding reaction timer used to avoid alarms if the limits are exceeded for short
periods of time.
Control Modes
The FX-300-REL module can operate in four modes: 1) Simple supervision (alarm function only);
2) On/Off control with deadband; 3) Time Proportional Control (TPC) or 4) Proportional Frequency
Control (PFC a.k.a. Variable Pulse).
Reset
During simple supervision (i.e. control mode is “Off”) an alarm may be reset in two ways: 1) by activating
the external reset input (S1 – terminal 3) or 2) by pressing the ‘Mode’ key in the “input” display mode.
A reset requires the alarm condition to be cleared.
Specifications
Mechanical
Electrical
Power supply 24VDC +/- 10%
Consumption 60mA max
Input current range (0)4-20mA, 70Ω
Digital input Pos. logic: 5-30VDC; Neg. logic: 0V
Input S1 External reset
Input S2 Alarm block
Relay spec 250VAC/5A
Housing Lexan UL94V-0 (Upper Part)
Noryl UL94V-0 (Lower Part)
Mounting M36 for 35mm DIN rail
IP Class Housing IP40. Connector IP20
Connector
Max 16A. Max 2.5mm2. Max torque 0.6 Nm
Temperature -15 to +50 °C
Weight 200 grams (7.04 ounces)
Dimensions D 58 x W36 x H86 mm (2.3” x 1.4” x 3.4”)
CE mark EN61326A
8 Additional Measurement & Function Modules
FX-300-REL Relay & Control