262
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 32 - MOTOR MONITORING
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
WINDING TEMPERATURES
The motor windings temperatures can be monitored
with either RTD’s or thermistors. When RTD’s are
used, there are 6 (2 per phase) RTD’s and the -001
Motor Monitoring Board is required. When thermis-
tors are used, there are 3 thermistors (1 per phase). The
thermistors could be connected to the Motor Monitor-
ing Board or the Variable Speed Drive. If connected to
the Motor Monitoring Board, either the -000 or -001
.
The Winding Temperature Protection setpoint must be
set to the sensor type that is used. Once set, the mi-
croboard via serial communications, commands the
Motor Monitoring Board to read the appropriate sen-
sor inputs and it also sends configuration commands
as stated below. If set to any setting other than DIS-
ABLED, the respective temperatures are displayed on
the MOTOR DETAILS Screen. The settings are:
• DISABLED Disables the Winding Temperature
feature. No Winding sensor inputs are read, no
winding temperatures are displayed and the head-
ing, text and data boxes do not appear. The High
Winding Temperature Fault and Warning will not
occur. This setting is used when the motor is not
equipped with winding temperature sensors or if
is desired to disable the feature for service rea-
sons. This is the default setting. The Motor Moni-
toring Board is commanded to not read any of its
winding temperature sensor inputs. The winding
displays can be individually disabled using the
Temperature Disable setpoint (ADMIN access
level) on the MOTOR SETPOINTS Screen.
• RTD Enables and displays the 6 (2 per phase) mo-
tor winding temperatures, as reported by the wind-
ing RTD’s, via the Motor Monitoring Board serial
communications. The microboard commands the
Motor Monitoring Board to read the sensor inputs
at the following points:
TB6-1,2,3
|Motor Winding Phase A1
Temperature
TB6-4,5,6
Phase A2 Temperature
TB6-7,8,9
Phase B1 Temperature
TB6-10,11,12 Phase B2 Temperature
TB5-1,2,3
Phase C1 Temperature
TB5-4,5,6
Phase C2 Temperature
• THERMISTOR Enables and displays the 3 motor
winding temperatures, as reported by the thermis-
tors via the Motor Monitoring Board serial com-
munications. The microboard sends a command to
have the Motor Monitoring Board read the sensor
inputs at the following points and another com-
mand to configure these inputs to accept a 50K
Ohm Thermistor.
CONFIGURABLE ANALOG INPUTS
FIGURE 101 -
WINDING TEMPERATURE – THERMISTORS
TB1
2
3
1
GND
+5VDC
IN
GND
243
GND
10K
10K
GND
10K
LOAD RESISTOR
SELECT FROM
PROCESSOR
NOTES
Phase A thermistor connection shown. Typical of all thermistor inputs.
LD15004