Entek IRD 6666 and 6667 Protection Monitors
1
6666 & 6667
1.
6666 and 6667 Monitors
This manual introduces you to the Entek IRD 6666 and 6667 monitors. It is intended for
anyone who installs, tests, configures, or uses the 6666 and 6667 monitors. This manual
covers the 6666 and 6667 with the version 3.04 firmware.
Introduction
The Entek IRD 6600 Series monitors are part of a modular protection system for critical
machinery. Each monitor is a stand-alone unit, using a separate power supply, relays, and
wiring termination unit. The 6600 Series protection monitors meet, and in many cases,
exceed the API 670 standard for monitoring. Each monitor in the 6600 Series fulfills a
different role in providing comprehensive machinery protection.
Monitor Description
The 6666 and 6667 monitors provide continuous monitoring of up to six RTD temperature
sensors or type J, K, and T thermocouples. The 6666 and 6667 independently monitor the
value for each input channel. In addition, the 6666 and 6667 continually compare the value
to the Alert and Danger alarm setpoints. The 6666 and 6667 allow you to set relay mapping,
allowing for complex combinations of alarms to trip a single relay using “voting”
techniques.
The monitors store the last 30 minutes of values (1/minute) for each channel. In the event of
a Danger alarm, or a “first out” Danger alarm message from another monitor, the monitors
store this data in a separate memory area. This allows later analysis of the data leading up to
the event that caused the Danger alarm. You can retrieve any of this data from the monitors
using the MODBUS protocol through a 4-wire multi-drop serial interface. MODBUS
communications are described in the manual on 6600 monitor communications.
The 6666 and 6667 are fixed scale devices with the actual full scale ranges preset at the
factory.
Caution: Do not connect the monitors to the transducers until you are sure of the power
connections. Transducers could be damaged if the transducer supply is not correct.
Application
You can use the 6666 and 6667 monitors to add temperature measurements to your machine
vibration and temperature monitoring system. The monitors are general purpose devices,
designed primarily for bearing temperature monitoring. They can also be used for other
temperature monitoring, such as motor winding temperatures and process temperatures. The
6666 monitor accepts signals from RTD temperature sensors, and the 6667 accepts signals
from type J, K, and T thermocouples. The external terminal block for the 6667 contains the
cold junction compensation required for thermocouples.
