West Control Solutions N6600 - Manual (Page 102)

A.2 DUAL SETPOINT/QUICK TRANSFER SELECTION INPUT
(OPTION)
Type: Voltage-free or TTL-compatible
Voltage-Free Operation: Connection to contacts of external
switch/relay; contacts open = Setpoint 1
selected (min. contact resistance =
5000 Ω ), contacts closed = Setpoint 2
selected (max. contact resistance = 50 Ω ).
TTL levels: To select Setpoint 1: –0.6V to 0.8V
To select Setpoint 2: 2.0V to 24.0V
Maximum Input Delay
(OFF-ON):
1 second
Minimum Input Delay
(ON-OFF):
1 second
A.3 HEATER CURRENT INPUT
Input Sampling Method: Delta-Sigma at 1kHz.
Input Resolution: 8 bits over 250ms rolling window
10 bits over 1s rolling window
Isolation: Via external current transformer.
Internal Burden 15 Ω
Primary Input Range
Maximum:
Adjustable 10.0A - 20.0A rms in 0.1A
increments, 21A - 100A rms in 1A
increments.
Primary Input Range
Minimum:
Fixed at 0A.
Secondary Input Span: 0 - 50mA rms (assuming sinusoidal input
current waveform).
A-3 S075-A
PM-0075