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CN20, CN34 SERIES DAMPER ACTUATOR FOR MODULATING AND FLOATING CONTROL
MODELS
Model #
20Nm,24Vac/Vdc, Modulating and floating/2-position control, Non-Spring return, Voltage Feedback
CN7220A2007
Signal and without aux. Switch
34Nm,24Vac/Vdc, Modulating and floating/2-position control, Non-Spring return, Voltage Feedback
CN7234A2008
Signal and without aux. Switch
PRODUCT IDENTIFICATION SYSTEM
C – Direct Coupled Actuator
C
OPERATION / FUNCTIONS
2
3
4
5
6
7
Fig. 2. Setting units and control elements
EN0B-0341CH33 R0803A
N – Fail Safe Function (Non-Spring Return)
61 – 24V Floating/2-position Control
72 – 24V Modulating and Floating/2-position Control
46 – 230V Floating/2-position Control
20 – 20 Nm (177 lb-in)
34 – 34 Nm (300 lb-in)
A – Standard Model
1 – No Feedback
2 – Voltage Feedback Signal
0 – No Internal Auxiliary Switches
2 – Two Internal Auxiliary Switches
N
72
20
A
2
0
Fig.1. Product Identification System
1
Description
XX – System Controlled Numbers
XX
Legend for Fig.2:
1
Self-centering shaft adapter
2
Retainer clip
3
Rotational angle scales (0...90° / 90...0°)
4
Mechanical end limits
5
Declutch button
6
Anti-rotation bracket
7
Function Selection Switch
8
Access cover
Contents of Package
The delivery package includes the actuator itself, parts 1
through 8 (see Fig.2), the anti-rotation bracket screws, and
installation instruction.
RUN MODES
The function selection switch (see Fig 3) is used to place the
actuator into any one of five different modes:
•
2-10V, modulating control; floating/2-position control, cw
run
•
0-10V/Dir, modulating control; floating/2-position control,
cw run
8
•
Service/Off, actuator stop running
•
10-0V/Rev, modulating control; floating/2-position control,
ccw run
2
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