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Position feedback is provided through a compact, factory-mounted infrared optical sensor that
instantaneously detects the position of the pinch valve pusher/armature assembly. An electrical signal
is transmitted back to the instrument control system, confirming whether the valve is open or closed.
With no moving parts, the optical sensor has a virtually unlimited life. The position feedback sensor is an
essential feature in many critical operations, such as in medical applications.
Availability:
075P2NC, 100P2NC, 075P3, 100P3 and 100PD valves
Electrical specifications:
Input voltage:
5.0 VDC
Maximum output voltage: 30.0 VDC
Maximum output current: 50.0 mA
Proper valve function is indicated by a drop in feedback voltage when the valve is open.
Typical set-up diagram:
CoolCube™“hit and hold” circuit
The CoolCube™ “Hit and Hold” circuit steps down DC voltage through Pulse Width Modulation after
100 ms. This reduces power consumption and heat generation while in “hold” setting and permits
faster response and greater force through brief use of voltage above valve nominal rating. There is no
power storage and the valve turns off immediately when power is cut to the circuit. The CoolCube™
includes terminal pins for easy in-line installation.
Availability:
CoolCube™ is available for ALL pinch valve configurations. 100PD range pinch valves,
108P range pinch valves and pinch valves with “quiet” option require the CoolCube-50R,
otherwise select the CoolCube-R.
Specifications:
Series
coolcube-r coolcube-50r
Time from “hit” to “hold” voltage:
100 ms
100 ms
Voltage step down percentage:
67%
50%
Max input voltage:
36 VDC
36 VDC
Max input current:
1 amp
1 amp
“Hold” voltage with 36 VDC input:
12 VDC
18 VDC
“Hold” voltage with 24 VDC input:
8 VDC
12 VDC
“Hold” voltage with 12 VDC input:
4 VDC
6 VDC
Power consumption reduction:
89%
75%
System
Power
Pinch Valve
12 or 24 VDC
Control
Power
Sensor
5 VDC
Feedback
Sensor
Pinch Valve
Voltage
Source
V
max
= 30 VDC
I
max
= 50mA
Sensor
Signal
+
+
_
_
Red wire
Black wire
White wire
Pull-up resistor
Brown wire
Blue wire
Feedback sensor mounted
on 100P2NC valve
CoolCube™
optical position feedback sensor
For more information please refer to
“CoolCube™” spec sheet.