Delta RMC151 - Manual (Page 659)

7 Hardware
• Analog Reference Input
Reference inputs are often used as gearing or camming masters. Reference inputs
cannot be used for direct control of the input axis.
• Input for a Control Axis
The A2 inputs can be used for the input of a control axis. The Control Output must be
from an axis module.
Part Number
The part number of the A2 module is EXP70-A2.
Specifications
Analog Interface
Inputs Two 16-bit differential
Isolation 500 VAC
Overvoltage protection ±40 V
Input ranges ±10 V and 4 20 mA (each channel independently configured)
Input impedance Voltage Input: 5 MΩ
Current Input: 250 Ω
Input filter slew rate 25 V/ms
Oversampling 8 times per control loop
Offset drift with
temperature
0.2 LSB/ºC typical (+10 V range)
Gain drift with
temperature
20 ppm/ºC typical (+10 V range)
Non-linearity 12 LSB (counts) typical (+10 V range)
Exciter Output 10 VDC ± 2%, 8 mA
LEDs
Input LED
This LED represents the input and control status for the axis. This bi-color (red/green)
LED has the following states:
State Description
Steady
Off
No power or this input is not assigned to an axis.
Steady
Green
The axis is either in closed loop control or is a reference axis. The axis is
not halted.
Flashing
Green
The input is in open loop and the axis is not halted (not possible for
reference axes).
Flashing
Red
A Closed Loop Halt or External Halt has occurred because an error bit is set
(not possible for reference axes). The LED will not turn red due to a halt
caused by halt command.
Steady
Red
An Open Loop Halt or Direct Output Halt has occurred because an error bit
is set (for reference axes, any halt has occurred). The LED will not turn red
due to a halt caused by halt command.
7.2.5.4. AP2 Expansion Module
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