Bently Nevada 3500/60 Data sheet
3500/60 and 3500/61 Temperature
Modules
Datasheet
Bently Nevada Machinery Condition Monitoring
Description
The 3500/60 & 61 modules provide six channels of
temperature monitoring and accept both Resistance
Temperature Detector (RTD) and Thermocouple (TC)
temperature inputs. The modules condition these inputs and
compare them against user-programmable alarm setpoints.
The 3500/60 and 3500/61 provide identical functionality
except that the 3500/61 provides recorder outputs for each of
its six channels while the 3500/60 does not.
The user programs the modules to perform either RTD or TC
temperature measurements using the 3500 Rack
Configuration Software. Different I/O modules are available in
RTD/TC non-isolated or TC isolated versions. The user can
configure the RTD/TC non-isolated version to accept either TC
or RTD, or a mixture of TC and RTD inputs. The TC isolated
version provides 250 Vdc of channel-to-channel isolation to
protect against external interference.
When used in a Triple Modular Redundant (TMR)
configuration, temperature monitors must be installed
adjacent to each other in groups of three. When used in this
configuration, the system employs two types of voting to
ensure accurate operation and to avoid single-point failures.
141540 Rev. L
3500/60 and 3500/61 Temperature Modules
Datasheet 141540 Rev. L
Specifications
Inputs
Signal Accepts from 1 to 6 RTD or TC
transducer signals.
Input
Impedance
Power Consumption
3500/60 Nominal consumption of 7
3500/61 Nominal consumption of 9
Tranducers
TCs
Type E -100 °C to +1000 °C, (-148 °F to
When using any of the isolated
thermocouple I/O modules (-03 or -04
I/O ordering option) with Type E
thermocouples, the available full-scale
range will be reduced if the 3500
system is operated in an ambient
temperature above +35C. The reduced
range will be -60C to +1000C (-76F to
+1832F). Rack configuration software
will allow the user to configure a
channel down to -100C but the system
will not function properly in this
scenario and therefore should not be
configured to operate with these
settings.
Type J -18 °C to +760 °C, (+0 °F to +1400
Type K -18 °C to +1370 °C, (+0 °F to
10 MΩ for each lead input.
watts.
watts.
+1832 °F).
°F).
+2498 °F)
100Ω 3-wire
& 4-wire
platinum
RTD (alpha
= 0.00385)
100Ω 3-wire
& 4-wire
platinum
RTD (alpha
= 0.00392)
120Ω 3-wire
& 4-wire
nickel RTD
10Ω 3-wire &
4-wire
copper RTD
I/O Modules
Isolated I/O Module
-200° C to +850° C
(-328 °F to +1562 °F).
With external barriers:
-50 °C to +850 °C
(-122 °F to +1562 °F).
-200 °C to +700 °C
(-328 °F to +1292 °F).
With external barriers:
-50 °C to +260 °C
(-122 °F to + 1292 °F).
-80 °C to +260 °C
(-112 °F to +500 °F).
With external barriers:
-50 °C to +260 °C
(-122 °F to + 500 °F).
-100 °C to +260 °C,
(-148 °F to +500 °F).
With external barriers:
-50 °C to +260 °C
(-122 °F to +500 °F).
Platinum RTD's with
0.00385 alphas are the
worldwide industrial
standard and are
recommended for all
applications
System Isolation: 500Vdc
Channel to Channel Isolation:
250 Vdc
.Type T -160 °C to +400 °C, (-256 °F to
+752 °F).
RTDs
Isolation is only required for
fault scenarios and these
voltages will not be present on
2/13
3500/60 and 3500/61 Temperature Modules
Datasheet 141540 Rev. L
the I/O module inputs when a
wiring or field fault occurs.
Outputs
Front Panel LEDs
OK LED Indicates when the
Temperature Monitor is
operating properly.
TX/RX LED Indicates then the Temperature
Monitor is communicating with
other modules in the 3500 rack.
Bypass LED Indicates when the
Temperature Monitor is in
Bypass Mode.
RTD Current Source Value
925 ±15 µA @ 25° C per transducer (single
supply for the 4-wire RTD and two supplies for
the 3-wire).
Recorder
+4 to +20 mA. Values are proportional to
monitor full-scale. Individual recorder values
are provided for each channel. Monitor
operation is unaffected by short circuits on
recorder outputs.
RTDs and TCs (except for 10Ω Copper RTDs)
Resolution 1 °C or 1 °F
Accuracy
Internal
Termination
NonIsolated
Bulkhead
Rack
Standard
Rack
±3 °C at 25 °C
(±5.4 °F at 77 °F).
±3 °C at 25 °C
(±5.4 °F at 77 °F).
External Termination Non-Isolated
Bulkhead
Rack
Standard
Rack
±3 °C at 25 °C
(±5.4 °F at 77 °F).
±1 °C at 25 °C
(±1.8 °F at 77 °F).
Internal Termination Isolated
Bulkhead
Rack
±2 °C at 25 °C
(±3.6 °F at 77 °F).
Voltage Compliance (current output)
0 to +12 Vdc range across load. Load
resistance is 0 to 600 Ω.
Resolution
0.3662 µA per bit ±0.15% error at room
temperature ±0.4% error over temperature
range.
Signal Conditioning
Specified at +25 °C (+77 °F) unless
otherwise noted.
Full-scale range for each
channel is set in the field via
3500 Configuration Software. No
calibration is required.
±3 °C at 25 °C
±5.4 °F at 77 °F).
Standard
Rack
±3 °C at 25 °C
±5.4 °F at 77 °F).
External Termination Isolated
Bulkhead
Rack
Standard
Rack
±1 °C at 25 °C
(±1.8 °F at 77 °F).
°C at 25 °C
(±1.8 °F at 77 °F)
10 Ω Copper RTDs
Resolution 1°C or 1 °F
Accuracy ±3 °C at 25 °C
3/13
3500/60 and 3500/61 Temperature Modules
Datasheet 141540 Rev. L
(±5.4 °F at 77 °F).
Cold Junction Compensation Sensor (used for TC
measurements)
Accuracy
±1° C at 25 °C
(±1.8 °F at 77 °F).
Alarms
Alarm
Setpoints
Alarm Time Delays
The user can program alarm delays using
software as follows:
Alert From 1 to 60 seconds in 1 second
The user can set Alert and
Danger setpoints for the value
measured by the monitor using
software configuration. Alarms
are adjustable from 0 to 100% of
full-scale for each measured
value. The exception is when the
full-scale range exceeds the
range of the sensor. In this case,
the range of the sensor will limit
the setpoint. Accuracy of alarms
are to within 0.13% of the desired
value. The Temperature
Monitors have both under and
over alarm setpoints.
intervals.
Danger From 1 to 60 seconds in 0.5
second intervals
Measured Values
Measured values are temperature
measurements used to monitor the machine.
The Temperature Monitors return
temperature measured values.
4/13
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