CHAPTER 5: SETTINGS TRANSDUCER INPUTS/OUTPUTS
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5-335
5
5.10.3.2 Remote RTDs 1 through 12
SETTINGS TRANSDUCER I/O RRTD INPUTS RRTD RTD 1(12)
The remote RTD inputs convert values of input resistance into temperature for further operations. These inputs are
intended to be connected to any of the RTD types in common use. Hardware details are contained in chapter 3.
On power up, the M60 reads and saves all application and type settings from the RRTD. This synchronizes the RRTD and
M60. Any changes to RRTD settings (function, application, or type) from the M60 interface are immediately reflected in the
RRTD. The following rules are followed:
•If the
RRTD 1 FUNCTION setting is “Enabled,” then the RRTD 1 APPLICATION setting value is written to RRTD device
•If the
RRTD 1 FUNCTION setting is “Disabled,” then RRTD1 APPLICATION setting value is set as “None”
•If the
RRTD 1 APPLICATION or RRTD 1 TYPE settings are changed, then these settings are immediately written to the RRTD
device
•If the
RRTD 1 APPLICATION setting is “Group 1” or “Group 2,” then a value of “Other” is written to the RRTD device
An RRTD actual value of –43°C implies that the RRTD 1 FUNCTION setting is “Enabled” but the corresponding RRTD 1
APPLICATION
setting is “None.”
If the RRTD communication link with the M60 is broken, then the last temperature actual values are retained until the RRTD
communication failure is detected. When this occurs, a RRTD COMM FAILURE self-test alarm and target message is
generated, an event is logged in the event recorder, and the temperature actual values are reset to 0. When the link is re-
established, the
RRTD 1 APPLICATION and RRTD 1 TYPE settings are read from the RRTD to re-synchronize the device.
RRTD 1 FUNCTION — This setting enables and disables the remote RTD. When disabled, no actual value is created for the
remote RTD.
RRTD 1
RRTD 1 FUNCTION:
Disabled
Range: Disabled, Enabled
RRTD 1 ID:
RRTD 1
Range: Up to 20 alphanumeric characters
RRTD 1 TYPE:
100 Ω Platinum
Range: 100 Nickel, 10 Copper, 100 Platinum,
120 Nickel
RRTD 1
APPLICATION: None
Range: None, Stator, Bearing, Ambient, Group 1,
Group 2
RRTD 1 ALARM
TEMPERATURE: 130°C
Range: 1 to 200°C in steps of 1
RRTD 1 ALARM
PKP DELAY: 5 s
Range: 5 to 600 s in steps of 5
RRTD 1 TRIP
TEMPERATURE: 130°C
Range: 1 to 200°C in steps of 1
RRTD 1 TRIP
PKP DELAY: 5 s
Range: 5 to 600 s in steps of 5
RRTD 1 TRIP
RST DELAY: 5 s
Range: 5 to 600 s in steps of 5
RRTD 1 TRIP VOTING:
None
Range: None, Group, Remote RTD 1, Remote RTD 2,...,
Remote RTD 12
RRTD 1 OPEN:
None
Range: None, Alarm, Block
RRTD 1 BLOCK:
Off
Range: FlexLogic operand
RRTD 1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
RRTD 1 EVENTS:
Disabled
Range: Disabled, Enabled
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