NI DIDS-2100 Series User Manual | © National Instruments | 49
3.3.3.3 Proportional Solenoid
Valves to PFI Lowside Channels
The lowside drivers of the PFI Driver module are capable of driving a wide variety of automotive relays and
proportional solenoid valves. Examples of actuators include EGR valves, turbocharger wastegate valves, fuel
pressure regulators, or any single-solenoid-actuator which draws less than 1.5 amps. The DI Driver System provides
a software mechanism to combine adjacent channels to double the current capacity. Refer to the
for information about locking LS channels together for synchronized operation.
Each LS channel is independently controlled via pulse-width modulation (PWM). PWM duty cycle from 0 to 100%
is possible. Each PWM controller utilizes a 20-bit timer operating at 2 MHz. This provides a resolution of 500 nsec
and a minimum PWM frequency of 2 Hz. Since 0% and 100% duty cycles are possible, relays and actuators may be
controlled in continuous on or off states.
Wiring diagram for up to four relays or proportional solenoid valves to the LS channels of the PFI Driver module: (NI
recommends using 18 AWG wire (or larger) for connected devices.)
Figure 3.3.3.3.a, Connecting general purpose solenoids to the low-side driver channels
Summary of Contents for NI DIDS-2103
Page 11: ...NI DIDS 2100 Series User Manual National Instruments 11 3 2 Software...
Page 32: ...32 ni com NI DIDS 2100 Series User Manual...
Page 40: ...40 ni com NI DIDS 2100 Series User Manual 3 3 Hardware...
Page 44: ...44 ni com NI DIDS 2100 Series User Manual 3 3 3 Connecting Injectors Sensors and Actuators...
Page 174: ...174 ni com NI DIDS 2100 Series User Manual Aux PWX 2 4 See above descriptions...
Page 210: ...210 ni com NI DIDS 2100 Series User Manual 12 Connecting Port Fuel Injectors to the PFI Driver...
Page 214: ...214 ni com NI DIDS 2100 Series User Manual 16 9066 RS 232 Serial Connector to TDK Power Supply...
Page 216: ...216 ni com NI DIDS 2100 Series User Manual 8 Important Information...
Page 223: ...NI DIDS 2100 Series User Manual National Instruments 223...