Delta RMC151 - Manual (Page 652)

RMC70/150 and RMCTools User Manual
Green
Flashing
Green
The Fault input is inactive, and the Enable output is inactive.
Steady
Red
The Fault input is active. Notice that it is not possible to tell if the Enable
output is active or inactive.
7.2.4.3. MA Axis Module
The MA module is one of the axis modules available for the RMC70. It interfaces to
Magnetostrictive Start/Stop and PWM and SSI transducers and has 1 analog servo output per
axis. The MA module is available with either 1 or 2 axes, called the MA1 and the MA2.
For details on Magnetostrictive and SSI, see the Magnetostrictive Displacement Transducers
and Synchronous Serial Interface topics.
Note:
Linear magnetostrictive transducers with SSI output must be of the synchronized type. See
the SSI Fundamentals topic for details.
Important!
When using SSI, the MA module requires RS-422 (5 V differential) SSI inputs. It does not
support single-ended SSI inputs or higher voltage inputs.
Features
• One MDT or SSI input per axis - each axis individually selectable
• One ±10 V, 16-bit control output per axis
• Current output up to ±200mA with VC2124 converter option
• Can be used for controlling position. Can also be used for dual-loop control such as
position-pressure when used in conjunction with the AP2 module.
• SSI can be used for rotary axes.
Part Number
The part numbers of the MA modules are MA1 and MA2 for the 1-axis and 2-axis
versions, respectively.
For example, RMC75E-MA1 is an RMC75E with a MA1 module.
Supported Transducers
Many different versions of MDT and SSI transducers exist, and the RMC70 MA axis
module supports a very wide variety of them. The following tables summarize the major
transducer options supported by the MA module:
MDT Options Value
Types Start/Stop (S/S)
Pulse-Width-Modulated
(PWM)
Count Range 32 bits
Wiring Differential, 5 V, RS-422
Interrogation
Modes
External. Notice that
internal interrogation is not
supported.
MDT Count 240 MHz
SSI
Options
Value
Data Bits 8 to 32
SSI Format Binary or Gray
Code
SSI Errors None, all zeros, all
ones, or bit 21
Clock Rates 150, 250, and 375
kHz
632 Delta Computer Systems, Inc.