34 (45)
Field Wiring
4.5.1 Surge Protection
The provisions shown in Table 8 should help to reduce electrical noise that could affect nearby
equipment.
Note:
Installation of OpenBAS-HV-NX10 series automation controllers must be in
accordance with the Canadian Electrical Code or the National Electrical Code,
and comply with all local regulations. Final acceptance is subject to the Local
Authority Having Jurisdiction (AHJ).
Relay output connections can contain hazardous voltages that present the risk of
electric shock. Caution must be exercised when handling these terminals. Only
certified technicians should handle these terminals.
Attention: Always install safety breakers and fuses according to the load and
voltage, and in accordance with Canadian Electrical Code or National
Electric Code. Follow all local regulations.
Table 8 Surge Protection on Relay Outputs
Type of field
device
Notes
Wiring diagram
Single phase motor
Install a 120 V MOV surge
protector in parallel with motor
to suppress noise.
120 V lamp with
ballast
Install a 120 V MOV surge
protector in parallel with
solenoid coil to suppress
noise.
Note:
Only lamps with ballast
require surge protection.
Incandescent, LED, and
halogen lamps do not require
surge protection.
i
!
Single Phase
Motor
NO
NC
C
120 VAC
Neutral
Controller
120 V lamp
120 VAC
Neutral
NO
NC
C
Controller
Summary of Contents for OpenBAS-HV-NX10 Series
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