Lab Test 1 Flashcards
1
Q
manufacturers of PLC
A
Allen Bradley (we use this), Siemens, Mitsubishi, Automation Direct, etc.
2
Q
terminals
A
start at zero
3
Q
microprocessors have 3 modes
A
- programming mode
- run mode
- remote mode (remote programming/run)
4
Q
reverse logic
A
- on hardwire: normally closed L.S. switch
- input diagram: normally open L.S. switch
- PLC logic: normally closed L.S. switch
5
Q
two PLCs in lab
A
- RSLogix500 (address based)
- RSLogix5000 (tag based)
6
Q
building HMI
A
use PV550 (panel builder software)
7
Q
counters
A
can have C5:0 to C5:99 (up to 100 counters)
8
Q
B 3/0
A
internal relay coil (binary coil)
9
Q
HMIs
A
dont use address, they use tags
10
Q
full speed
A
full speed occurs at 10 volts = 2^15 = 32767 bits = 3600 RPM = 60 Hz
11
Q
zero speed
A
0 volts = 0 Hz
12
Q
motor pulses
A
there are three pulses for every motor turn
so if you put in 1500, there is 500 turns
13
Q
things you can set on the variable frequency drive
A
- min frequency
- max frequency
- acceleration
- deceleration
14
Q
15 bits
A
- can only use 15 of the 16 bits because the first bit is a sign bit
- this is where 32767 comes from (2^15)
15
Q
number of digital inputs and outputs
A
16 inputs/outputs can be hooked up (I:1/0 through I:1/15 and O:2/0 through O:2/15)
