Doran GuardianXL, Инструкция по установке и эксплуатации

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Chapter 8 Internal Relay Option
The Internal Relay Option allows up to four relays to be mounted inside the GuardianXL
enclosure. The GuardianXL relay control is described in Chapter 6 Setpoint
Configuration and Chapter 7 Batch Programs. This chapter discusses the installation and
wiring of the relay controls.
Three types of relays are available for use with the Internal Relay Option –
Electromechanical and Solid State (AC or DC). Specify style of relay at time of order.
Relays are socked so replacements can be installed in the field.
Figure 8.1 Internal Relay Control Board
Solid State Relay Setup
The solid state relay option comes with an interface cable to the motherboard for relay
control. A second twelve conductor cable provides the relay output and exits the meter
through a watertight. Leave this cable in place when configuring the outputs and refer to
the output cable color code table. In the field, this cable will most likely be replaced.
Ensure that the replacement cable is rated well above the maximum current required by
the electrical device to ensure safe operation and the cable diameter is between 0.16” and
0.31” for proper watertight sealing. The GuardianXL does not provide the AC or DC
power to run external devices. Ensure your customer has made provisions to supply the
necessary power.
Each relay has a three-position output that provides a Common, Normally Open and
Normally Closed terminal. Keep in mind that the Normally Closed terminal is only
available for use with a mechanical relay. Solid State relays can operate as Normally
Closed through software configuration only. The following table shows the color codes
and terminal connections for the included cable.