Spectrum Controls 2085-IF4XOF4-SC, User Manual

Page: 19 / 68

Chapter 1: Module Overview 1-11
User’s Manual Pub. 0300307-01 Rev. A
Blink
Code
Name and Description Resolution
8
Over Temperature
One or more output drivers is
overheating. All outputs are disabled for
this condition.
Be sure the module is in an appropriate operating
environment. Power-cycle to try and clear the
error after it has been given time to cool down.
9
Analog Communications Error – Input
A communications error or connection
error took place between the processor
and ADC or PGA circuitry.
Power-cycle to try and clear the error condition. If
unsuccessful, the module must be replaced.
System
Overview and
Module Operation
The 2085-IF4XOF4-SC module is expected to operate indefinitely. It does not
require periodic maintenance or calibration. The module communicates to the
controller through the bus interface. The module also receives 5 VDC and 24
VDC through the bus interface.
WARNING
HAZARD OF DAMAGE TO MODULE
When multiple channels are configured in voltage mode, and an external
24 V power source is applied to the channels via the terminal block, there
is the possibility that the module will be damaged if multiple channels
simultaneously experience over voltage conditions.
This is because the heating caused by the overvoltage condition will apply
to a very small area and may result in damage to that area.
Block diagram:
Isolator
Isolated
DC-DC
Converter
OUT+x
OUT-x
Backplane
ASIC
Backplane
Communication
.
.
x4
output
channels
Processor
50VAC
Working
Reinforced
Isolation
5V DC
24V DC
(used by backplane
circuitry)
Status
Indicator
20
85
B
ac
kp
lan
e
IN+x
IN-x
x4
input
channels
A/D
Converter
4 Ch. D/A
Converter
Watchdog
monitor
Vref
x4
RTB pins
4 Input
Channels
ESD
Protection,
Channel
Multiplexing,
& Signal
Conditioning
4 Output
Channels
Voltage/
Current
Driver
&
Protection
250 Ω
+/10%