Instruction manual
Model 5100-99-IT 4-20 mA Module
4.4 CONFIGURE SET-POINTS
The transmitter set-points menu is used to initially set-up the alarm set points, relay actions, range, 4-20 mA
action and RS-485/Sentry address and baud rates.
• Alarm Set-points: Once the Set-up menu is selected, press [E] to activate the Alarm Set-point
screen. Use the [▲] or [▼] keys to select Low Alarm or High Alarm menu. Key [▲] will adjust the
setpoint upwards and Key [▼] will adjust the value downwards. Once it reaches the desired
setpoint, Key [E] will accept it and ACK will appear.
• Alarm Relay Set-up: Once the Set-up menu is selected, press key [▼] once and press [E] to
activate the Relay Set-up menu. Use the [▲] or [▼] keys to select High Alarm or Low Alarm relay
menu and press [E]. Use the [▲] or [▼] keys to select the correct alarm relay action for the
application, Latch, Sentry or Non-Latch. Selecting “Sentry” enables the Sentry controller to make all
alarm action decisions. * indicates the current selection.
• Range: Once the Set-up menu is selected, press key [▼] twice and press [E] to activate the Range
Set-up menu. Use the [▲] or [▼] keys to select Range menu and press [E]. When “Range” is
selected menu provides any choices of ranges available for the gas type selected. Use the [▲] or
[▼] keys to select the desired range. If the “User” range is selected, use the [▲] or [▼] keys to
adjust the high end of the range desired. See specifications (page 25) for optional ranges.
• 4-20mA: Once the Set-up menu is selected, press key [▼] three times and press [E] to activate the
4-20mA Set-up menu. Use the [▲] or [▼] keys to select Calib or CalibOut menu and press [E].
The “Calib” section of the menu allows the user to calibrate the 4 mA and 20 mA outputs. To
calibrate the 4 mA and 20 mA outputs it is necessary to have an amp meter connected to the 5100-
XX-IT and upon selecting the 4 mA output calibration then the [▲] or [▼] keys can be used to adjust
the 4 mA reading on the amp meter until it reads 4 mA. Similar steps can then be performed for the
20 mA output. The CalibOut section allows the user to select the 4-20 mA output action desired
during calibration. * indicates the current selected value. Available selections include:
Track – the 4-20mA value tracks the calibration gas exposed to the transmitter
Zero – the 4-20mA value is held at 0mA during calibration
C1.50mA – the 4-20mA value is held at 1.50mA during calibration
C4.00mA – the 4-20mA value is held at 4.0mA during calibration.
TblOut – the TblOut menu allos user to select 2.5 mA or A user selected value for
Trouble mA signal.
DigInput – the DigInput menu allows user to select supervised or non-supervised input
WarmMin – the WarmMin menu allows user to select warm up time in minutes.
• RS-485 - Once the Set-up menu is selected, press key [▼] four times and press [E] to activate the
RS-485/Sentry Set-up menu. Use the [▲] or [▼] keys to select “Mode” or “Calib” menu and press
[E]. The “Mode” menu allows the user to select units including %LEL, % Vol, PPM % Full Scale, or
NA. The “Calib” section of the menu allows the user to calibrate the 4 mA and 20 mA outputs and
inputs. Note that the 5100-99-IT has a rotary switch on the faceplate and it is used to select
addresses 1-15. When connected to Sentry the user can select 1-8 and when using Modbus RS-
485 the user can select addresses 1-15. For Modbus addresses above 15, set the rotary switch to
0 and then use the “Address” menu to select any address between 16 and 254. The Baud rate
menu allows the user to select a baud rate of 38400, 19200, 9600, 4800 or 2400. * indicates current
selection. Sentry default is 9600.
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