Honeywell SmartPAC 2, User Manual, Page: 64 / 522

1126800 SmartPAC 2 with WPC Integration
Page 42 Chapter 2 Installing SmartPAC 2 and WPC
2. Do not use gears, right angle joints, shafts with universal joints because these will
develop too much backlash or too much play.
3. Do not try direct coupling to the crank because this requires extreme precision. If the
resolver is only slightly off-center, the resolver bearing will be subjected to side loads
well in excess of its rated capacity and will ultimately fail.
4. Do not use flexible couplings (can be inaccurate) or V belts (inaccurate, will slip).
5. Do not use a flexible shaft like a speedometer cable. The resolver will lag the crank
because the shaft twists on start-up. When the crank stops, the resolver will turn past the
true stopping point and snap backward.
Resolver shown in zero-degrees position, with key perpendicular to base
3.62
(91.9)
0.34 (8.6) dia holes
2 places
RESOLVER IS AT ZERO WHEN
KEYWAY IS ALIGNED WITH ARROW
3.00
(76.2)
3.75
(95.3)
1.50
(38.1)
9.16
(232.7)
2.75
(69.9)
1.06
(26.9)
1.75
(44.5)
2.00
(50.8)
Electrical connector
for cable
3/4” dia. shaft (19.05)
standard key in keyway
Figure 2 - 7. Resolver
Mounting and Wiring the Resolver
To mount the resolver:
After you have thought out your design and gathered the parts, mount the resolver by bolting
it to the press or other platform at the spot you selected. Install your drive mechanism. It does
not matter which way the resolver turns. You will set the direction of rotation when you wire
it. You will also electronically zero the resolver later.
Set the resolver as close to zero as you
can by turning the shaft so the keyway is aligned with the arrow on the housing . Align the