Setup - MSA SMC 5100-02-IT Operating Manual

4 Operation
4.4 Set-Up
The sensor module set-points menu is used to initially set-up the alarm set points, relay actions, gas type and range, 4-20
mA action or RS-485/Sentry address and baud rates, Digital Input and Warm-up time. Use the [▲] or [▼] keys to select
following menus and press [E] to select.
• Alarms – Use the [▲] or [▼] keys to select Low Alarm (Warning) or High Alarm (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. Set-points can be configured using this menu to values between 0 and 60.
• Relays – Use the [▲] or [▼] keys to select High Alarm (Alarm) or Low Alarm (Warning) 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.
• 4-20mA – 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 SMC 5100-02-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 gas sensor module
◦ C2.50mA – the 4-20mA value is held at 2.50mA during calibration
◦ C4.00mA – the 4-20mA value is held at 4.0mA during calibration
◦ User defined value
• RS-485 – Use the [▲] or [▼] keys to select Address or Baud rate menu and press [E]. Note that the SMC 5100-02-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. RS-
485 default parameters are: 38,400 baud, 8 bits, 1 stop bit, no parity.
The table below describes the Set-up Configuration. For Sections C-E, use the Reference column in the table to find them
on the next page.
Function Display
--0%LEL-
Mode ALMRSET: Mode Function - Alarm Reset
Mode CALIB:--
Mode

SETUP:---

Enter Alarms
Down Relays
Down Gas Factor
Down 4-20mA
Down RS-485
Enter H.Alarm
Enter HASP:60-
Down (x5) HASP:55-
Enter ACK
H.Alarm
Enter H. Relay
Down L.Relay
Enter Latch
24
Default Display
Mode Function - Calibrate
Mode Function - Set Point Adjustments
S.P. Function - Alarm Adjust
S.P. Function - Relays Adjust
S.P. Function - Gas Factor Adjust
S.P. Function - 4-20 mA Adjust
S.P. Function - RS-485/Sentry Output Adjust
High Alarm Set Point Adjustment Example
S.P. Function - High Alarm Adjust
High Alarm Set Point: current = 60
Use ▲ or ▼ keys to adjust to new set point
High Alarm Set Point: new = 55
Momentary Acknowledge of new Set Point
S.P. Function - High Alarm Adjust
Relays Set Point Adjustment Example
S.P. Function - High Alarm Relay Adjust
S.P. Function - Low Alarm Relay Adjust
Use ▲ or ▼ keys to adjust to new relay action (Latch, Sentry, NonLatch)
SMC 5100-02-IT Gas Sensor
Description Reference
* A Below
* B Below
* C Below
* D Below
* E Below
*A
*B
US