Mounting is usually done either using the D-style square flange mount, E- or G-style servo mounts, or one of the standard face mounts, F1 for
example. Consult factory for additional face mount options.
2.
The shaft seal is recommended in virtually all installations. The most common exceptions are applications requiring a very low starting torque or
those requiring operation at both high temperature and high speed.
3.
Non-standard index widths and multiple indices are available by special order. Consult factory.
4.
Complementary outputs are recommended for use with line driver type (source/sink) outputs. When used with differential receivers, this combination
provides a high degree of noise immunity.
5. Output IC’s:
Output IC’s are available as either Line Driver (LD) or NPN Open Collector (OC) types. Open Collectors require pull-up resistors, resulting
in higher output source impedance (sink impedance is similar to that of line drivers). In general, use of a Line Driver style output is recommended.
Line Drivers source or sink current and their lower impedance mean better noise immunity and faster switching times.
Warning:
Do not connect any
line driver outputs directly to circuit common/OV, which may damage the driver. Unused outputs should be isolated and left floating. Our applications
specialists would be pleased to discuss your system requirements and the compatibility of your receiving electronics with Line Driver type outputs.
28V/V:
Multi-voltage Line Driver (7272*): 100 mA source/sink. Input voltage 5 to 28 VDC +/- 5% standard (Note: Vout = Vin). This driver is TTL
compatible when used with 5 volt supply. Supply lines are protected against overvoltage to 60 volts and reverse voltage. Outputs are short circuit
protected for one minute. Supply current is 120 mA typical (plus load current). This is the recommended replacement for 3904R and 7406R open
collector outputs with internal pullup resistors. It is also a direct replacement for any 4469, 88C30, 8830 or 26LS31 line driver
28V/5:
Multi-voltage Line Driver (7272*): 100 mA source/sink. Input voltage 5 to 28 VDC +/- 5% standard, internally regulated with 5V (TTL compatible)
logic out. Supply lines are protected against overvoltage to 60 volts and reverse voltage. Outputs are short circuit protected for one minute. Supply
current is 90 mA typical (plus load current).
28V/OC:
NPN Open Collector (3904*, 7273*). Current sink of 80 mA max. Current sourced by external pull- up resistor. Output can be pulled up to
voltage other than supply voltage (30 V max). Input voltage 5 to 28 VDC +/- 5% standard. Supply current is 120 mA typical. This replaces prior IC’s
with designations of 3904, 7406, 3302, 681 and 689.
6.
Special –S at the end of the model number is used to define a variety of non-standard features such as special shaft lengths, voltage options, or
special testing. Please consult the factory to discuss your special requirements.
7.
Higher frequency response may be available. Please consult with the factory.
8.
Extended temperature ratings are available in the following ranges: -40 to 70°C, -40 to 85°C, –20 to 105°C and –40 to 105°C depending on the
particular model. Some models can operate down to -55°C. Extended temperature ranges can affect other performance factors. Consult with factory
for more specific information.
9.
Mating straight plug receptacles may be ordered from the factory:
For M12 use MS3116F12-10S,
For M14 use MS3106F14S-6S
For M14/19 use MS3116J14-19S, For M16 use MS3106F16S-1S
For M18 use MS3106F18-1S,
For M20 use MS3106F20-29S
* Products manufactured prior to April 2007 used the line driver IC number instead of voltage output in model number.
OPTIONS
Serial Synchronous Interface (SSI)
SSI output provides effective synchronization in a closed-loop control system. A clock pulse train from a controller is used to clock out sensor data:
one bit of position data is transmitted to the controller per one clock pulse received by the sensor. The use of a differential driver permits reliable
transmission of data over long distances in environments that may be electrically noisy. The encoder utilizes a clock signal, provided by the user
interface, to time the data transmission. Receiving electronics must include an appropriate receiver as well as line terminating resistors
Features:
• Synchronous transmission • Transmission lengths to 1000 feet • Accepts clock rates from 100 KHz to 1.8 MHzone
Figure 2
Data Transmission Sequence
1.
Output driver of the encoder is a MAX 491 transceiver in transmit mode. The recommended receiver is a MAX 491 transceiver in receive mode.
2.
Controller provides a series of pulses (or differential pulse pairs) on the CLOCK input lines.
3.
On the first HIGH-to-LOW CLOCK transition, the encoder latches its data at the current position and prepares to transmit.
4.
Controller reads data on the falling edge of the next 15 clock cycles.
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