PWM-C Transducers Installation Sheet
TCON172 06/97
P.O. Box 59469, Dallas, TX 75229
Phone: (972) 323-1111 FAX: (972) 242-0026
1997 by Control Systems International.
Control Systems
International
®
Specifications
Dimensions ................................................... 3.25" W
×
4.0" L
................................................................... (8.25
×
10.2 cm)
Snap-track dimensions.................................. 3.5" W
×
4.0 " L
..................................................................... (8.9
×
10.2 cm)
Input pulse duration ................................... 0.1–25.6 seconds
or ................................................................ 0.1–5.2 seconds
Input pulse resolution ..................................................... 0.4%
Resolution counts .......................................................... 0–255
Input interface
................... Dry contact, triac or open collector transistor
Input excitation voltage............................................+15 VDC
........................................................ (continuous or pulsed)
Output current range:
PWM-C1............................................................... 4–20 mA
PWM-C2............................................................... 0–20 mA
Output excitation voltage........................................13.5 VDC
..................................... (675
Ω
maximum loop resistance)
Linearity .............................................................. 1% full scale
Operating temperature.......................... 32–132
°
F (0–50
°
C)
Relative humidity..........................10–90% (noncondensing)
Supply voltage .......................................24–35 VDC @ 75 mA
or .....................................18–28 VAC @ 150 mA, 50/60 Hz
Engineering Coefficients (input range 0.1–5.2 seconds):
M (slope)................................................................. 0.19608
B (intercept)...........................................................-1.96078
Engineering coefficients (input range 0.1–25.6 seconds):
M (slope)................................................................. 0.03922
B (intercept)...........................................................-0.39216
Note:
These M and B coefficients apply to 0–100% input source
range.
Figure 1.
PWM-C Series Wiring Diagram
Remove both R27 and
Input
Power
Clock
3.5" Width
4.0" Length
J2
5
Sec
Sec
25
R27
D5
Red LED Indicates Detection
Of Pulse Input
Green Flashing LED indicates
Power and Clock Rate
5 Sec/25 Sec
Pulse Width
Selection
Remove R27 for MR
or I/SITE triac input.
– Common (Ground)
+ Current Output to
+24 V
– GND
24V Supply
Polarity
Indication
Applies if DC
Supply Is Used
Common (Ground)
Connection When
Triac or Transistor
Output Is Used
Pulse Width
Modulated
Output Using
Normally-Open
Relay Contact
or
Open Collector
Transistor
or Triac
CONTROL UNIT
Device Under Control
D5 for UC triac input.
1
V
2
G
3
I
4
O
5
G
0.47 µf
Install 0.47 µf capacitor
across terminals 2 and 3
if used with MR-VAV-AX.
1
V
2
G
3
I
4
O
5
G
