Specifications

A-23
800-TEC-ENGR
www.avg.net
Position Transducers/Sensors
SECTION
A
Autotech's Dual Resolver Decoder model DM2-DTRAK-0X
is a snap track mounted dual resolver decoder especially
designed for OEMs. The unit can be ordered with PNP
sourcing, NPN sinking, or with TTL type of outputs, and
operates from 11-28 VDC input power. The standard unit
supports gear ratios of 16:1, 32:1, 64:1 and 128:1 between
fine and coarse resolvers. The decoder provides BCD, Binary
or Gray code outputs. The outputs are updated transparently
or by an external data transfer input. The gear ratio, output
code and the output update method are field selectable by dip
switches.
The unit has built-in diagnostics for broken resolver cable and
for shorted outputs (P and N outputs only). Two LED indica-
tors provide positive indication of a properly working unit.
The resolver interface is short circuit proof.
DESCRIPTION
DM2 DUAL RESOLVER DECODER
SNAP TRACK MOUNT
◆ Decoder for dual resolver
◆ Field selectable 16:1, 32:1, 64:1 or 128:1 gear ratio
◆ Field selectable Binary, BCD or Gray Code output
◆ 1024 counts per turn (1000 in case of BCD)
◆ Short circuit proof resolver interface
◆ Broken resolver cable indication
◆ PNP sourcing, NPN sinking or TTL outputs
◆ Short circuit protected outputs and output shorted
indicator (only with P & N type of outputs)
◆ Field selectable PC Handshake or transparent
operation
DM2 DUAL RESOLVER DECODER SPECIFICATIONS
Input Power: 11-28 VAC, 6 W
Operating Temperature: -10 °F to +130 °F (-23 °C to +55 °C)
Position Transducer: AVG Automation's RL210 dual resolvers.
Maximum Cable Length between Resolver and DM2: 2500 ft,
shielded
Standard gear ratios: Field selectabel 16:1, 32:1, 64:1, and 128:1
Output Formats: Field selectable BDC, Binary or Gray
Output data update: Switch selectable between transparent
and PC Handshake
Output Type:
P: PNP sourcing:
Logic TRUE:
Transistor ON, 1.7 V drop @ 100 mA
Logic FALSE: Transistor OFF, 0.2 mA leakage @ 50 VDC
N: NPN sinking:
Logic TRUE:
Transistor ON, 1.1 V max. @ 100 mA
Logic FALSE: Collector open, 0.1 mA leakage @ 50 VDC
C: NPN sinking (HIGH TRUE LOGIC):
Logic TRUE:
Collector open, 0.1 mA leakage @ 50 VDC
Logic FALSE: 1.1 V drop @ 100 mA
T: TTL output:
Logic TRUE:
-300 mA max
Logic FALSE: 24.0 mA max
PC Handshake: Edge triggered (Low to high as well as high to
low); 30 usec minimum strobe width; The data is stabilized
within 100 usec of any triggering edge, and remains frozen
until next triggering edge comes in.
Transparent: Output data is continuously updated.The data is
latched for 100 +/- 10 usec within 30 usec of a transfer input.
Data transfer input: 10-28 VDC input