Model CTF878 Startup Guide
83
Chapter 5.
5.1.3.2
User I/O
Digital Input/Outputs:
Standard: RS232
Optional: RS485
Analog Inputs
Select up to three boards of the following two types (see note below):
Analog Input Board with two isolated 4-20mA inputs and 24V loop
power
RTD Input Board with two isolated 3-wire RTD inputs;
Span –148° to 600°F (–100° to 333°C)
Analog Outputs
Standard: Two isolated 0/4-20mA current outputs, 550
max. load
Optional: Select up to three additional output boards, each with four
isolated 0/4-20mA outputs, 1k
maximum load (see note below).
Totalizer/Frequency Outputs
Select up to three Totalizer/Frequency Output Boards, each with four outputs per board, 10kHz maximum (see note
below). All boards allow software selectable functioning in two modes:
Totalizer Mode: Pulse per defined unit of parameter (e.g., 1 pulse/ft
3
).
Frequency Mode: Pulse frequency proportional to magnitude of
parameter (e.g., 10 Hz = 1 ft
3
/min).
Alarm Relays
Select up to two boards of the following types (see note below):
General Purpose Relay Board with three Form-C relays;
120VAC, 28VDC max., 5A max.; DC 30W max., AC 60VA
Hermetically Sealed Relay Board with three hermetically sealed
Form-C relays; 120VAC, 28VDC max., 2A max.;
DC 56W max., AC 60VA.
Note:
There can be a maximum of six input/output option boards at one time.
Cable Type and Length
Standard: Set of four coaxial cables, type RG62a/u, 10ft (3m) long.
Optional: Lengths to 500 ft (153 m).
5.1.3.3
Power Input
AC Line Options
Input Voltage: 85-264 VAC, 47-63 Hz
Input Power: 15-35 watts (option dependent)
Power Factor: 0.5
Peak Inrush Current: < 1.4 A after 10 ms, 120V 60 Hz
< 2.5 A after 10 ms, 240V 50 Hz
Line Dropout Holdup Time: 10 ms minimum per EN61000-4-11
Protection
Built-in mains power surge/lightning protection.
5.1.3.4
Environmental Requirements
Operating Temperature:
14° to 130°F (–10° to 55°C)
Storage Temperature
–40° to 158°F (–40° to 70°C)
Summary of Contents for CTF878
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