AMETEK 2110 Shut Height Monitor - Manual (Page 8)

Installation and Programming Manual 4
Chapter 2: Hardware Overview
5 Installation and Programming Manual
Chapter 2: Hardware Overview
This module also provides two input pins for use as a field configured latch or synchronized
handshake input. The latch input freezes the digital output data while the PLC reads it. The
data is updated when the input is released. When configured for synchronized handshake, the
PLC must provide a clocked square wave input into these input pins. Digital data is updated
on each transition of the square wave and the PLC is synchronized to read the updated position
data after a 100 microsecond settling time.
This input accepts a 5 to 24 VDC source from the PLC to perform the latch or synchronized
handshake function described above. For details on wiring to the digital output board, see
pages 16 & 17.
Analog Output (FMOA01) Output Option A1
This module is used to transmit position or velocity data to a PLC in an analog format. The
module provides two separate analog output channels that can be independently configured for
position or velocity data.
These analog outputs can be field scaled over any range and configured for 0 - 10 VDC, 10 - 0
VDC, -10 VDC to +10 VDC, 4 - 20 mA, 20 - 4mA, 0 - 20 mA or 20 - 0 mA.
For applications that require remote indication it is recommended to use an aftermarket analog
input display or a digital input display. When using one of these displays the optional analog or
digital output board must be specified in the part number.
The shut height monitor can be used with a resolver or Linear Displacement Transducer (LDT).
Both input devices’ input modules are located in slot 3 of the enclosure. You can identify the
module type by the name found on the back of the module.
Resolver (FMIR01) Input Option R1
This module is used with a Gemco resolver. The resolver assembly consists of a highly
accurate and repeatable brushless resolver, housed in an industrial-grade enclosure. The shaft
position is calculated from two analog signals that vary as a function of the angular rotation of
the input shaft.
The brushless resolver works on the same principle as a rotary transformer to couple power into
the rotor. The construction of the brushless resolver consists of a two-phase stator and a single-
phase rotor. Each stator is positioned 90° apart from each other. The two stators continually
provide two different output voltages. Using these two outputs, the module performs a
ratiometric conversion and provides an absolute position. This results in a highly accurate
and repeatable transducer having excellent reliability with an infinite resolution which can be
converted by a resolver-to-digital converter into digital position data.
2.2: Input Modules
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