Honeywell TST-R, TST INSTALLATION INSTRUCTIONS

TST... and TST...-R

Smart Temp ELEC. TEMPERATURE SWITCHES/TRANSMITTERS

INSTALLATION INSTRUCTIONS

GENERAL INFORMATION

Honeywell FEMA's TST and TST...R series thermostats require adjustment (configuration and parameterization) in only two modes (the basic mode and the expert mode) and are suitable for the precision-adjustment and monitoring of medium temperatures in the fields of plant construction, fluidics, process technology, and pneumatics, as well as in the monitoring and control of furnaces, heating units, and process temperatures, as well as for applications in the field of frost protection.

These thermostats provide sufficient accuracy (0.5% of the final value) for measurement monitoring in many laboratory applications. Models with built-on sensors for a temperature range of -50...+200 °C and models with an external sensor for a temperature range of -50...+400 °C are available. Customized PT1000 precision class-A sensors (conforming to DIN 60 751) can also be employed in the aforementioned temperature ranges.

TECHNICAL DATA

Housing	polybutylene terephthalate
Ambient temperature	-20...+60 °C
Storage temperature	-35...+80 °C
Temp. of medium	-50...+50 °C, -50...200 °C,
	-50...+400 °C (dependent on
Relative humidity	model)
	0...95%, non-condensing
Accuracy, total	0.5% of FSO (full-scale output)
Medium temp. drift	0.3% / 10 K
Parts in contact with medium
Process connections	G½" external thread
Electrical connection
Both series	2 5-prong A-coded M12 plugs
TST...-R series	as per DIN IEC 60947-5-2
	additional 3-prong B-coded
	M12 plug as per DIN EN
Protection class	50044
	II as per EN 60335-1 (when
Protection rating	installed accordingly)
	IP65 as per EN 60529
Climate class	C as per DIN EN 60654
Power supply	14...36 Vdc (> 50 °C,
EMC	max. 30 Vdc), max. 100 mA
	as per EN 61326/A1
Switch outputs	configurable as N.O./N.C.
	high-side/low-side or as push-
	pull / inverted push-pull
	switches
Switching difference	max. 250 mA / 14...36 Vdc
	(SP and RP) configurable

Relay output (TST..-R-Version)

Contact type	1 switch-over contact
Min. electrical lifetime	250,000 switching cycles

Switching performance, gold (AgSnO2+Au) contacts

AC1 (resistive)	1.5 VA (24 Vdc / 60 mA,
	230 Vac / 6.5 mA)
AC15 (inductive)	unsuitable
Max. switch-on current	60 mA for < 5 ms

Min. switching performance 50 mW (> 5 V or > 2 mA)

Switching performance, silver (AgSnO2) contacts

AC1 (resistive)	690 VA (230 Vac / 3 A)
AC15 (inductive)	230 VA (230 Vac / 1 A)
Max. switch-on current	30 A for < 5 ms
	(for cos φ < 0.7: 10 A)
Min. switching performance 500 mW (> 12 V or
	> 10 mA)
Diagnostic output (warning output on plug 2)
Max. load	20 mA / 14...36 Vdc
Transmitter output (analog output)
Voltage/current	0...10 V / 4...20 mA or
	10...0 V / 20...4 mA
	(config. in expert mode)
Transient response	approx. 300 ms

® U.S. Registered Trademark
Copyright © 2003 Honeywell Inc.	MU1B-0248GE51 R0903
All Rights Reserved	7157 672

TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

SERIES

The electronic temperature switches/transmitters are available in two series, TST... and TST...-R, easily distinguishable by the number of M12 plugs present on the rear side.

TST... Series

TST...-R Series

The devices of this series provide both switching and transmitting functionality.

Like TST... Series devices, the devices of this series provide switching and transmitting, but also relaying functionality.

plug 2:	plug 2:
power supply,	power supply,
AOUT, and WARN	AOUT, and WARN

plug 3: switch-over contact relay

plug 1:	plug 1:
power supply,	power supply,
OUT1, and OUT2	OUT1, and OUT2
Fig. 1. TST... Series, rear view of housing	Fig. 2. TST...-R Series, rear view of housing

Two switching outputs (OUT1 and OUT2) are located on a 5- prong, A-coded (as per DIN IEC 60947-5-2) M12 plug (plug 1), which you can also use to connect the power supply. You can configure the two switching outputs as normally-open / normally-closed high-side/low-side or push-pull / inverted push-pull switches (see also Table 3 on page 8).

An analog output (AOUT) and a warning output (WARN) are likewise located on a 5-prong, A-coded (as per DIN IEC 60947-5-2) M12 plug (plug 2), which you can also use to connect the power supply. You can configure the analog output as either a 0...10 V / 10...0 V analog output or as a 4...20 mA / 20...4 mA analog output. The warning output provides feedback about the device's error status (see also section "Technical Data on the WARN Output" on page 6 and section "Error Codes" on page 8).

Two switching outputs (OUT1 and OUT2) are located on a 5- prong, A-coded (as per DIN IEC 60947-5-2) M12 plug (plug 1), which you can also use to connect the power supply. You can configure the two switching outputs as normally-open / normally-closed high-side/low-side or push-pull / inverted push-pull switches (see also Table 3 on page 8).

An analog output (AOUT) and a warning output (WARN) are likewise located on a 5-prong, A-coded (as per DIN IEC 60947-5-2) M12 plug (plug 2), which you can also use to connect the power supply. You can configure the analog output as either a 0...10 V / 10...0 V analog output or as a 4...20 mA / 20...4 mA analog output. The warning output provides feedback about the device's error status (see also section "Technical Data on the WARN Output" on page 6 and section "Error Codes" on page 8).

A switch-over contact relay output is located on a 3-prong, B- coded M12 plug (plug 3), for which a 4-prong M12 angle junction box with pre-attached cable is available as an accessory. You can configure this relay output to be coupled with either OUT1 or OUT2 or with the warning output. If you configure OUT2 as a warning output, the relay output will then likewise function as a warning output (see also section "Pin Assignment of Plug 3" on page 4). You cannot configure the relay output as a normally-open or normally-closed switch.

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TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

IMPORTANT

The switching performance of the gold (AgSn02+Au [5m]) switch-over contacts of the relay located on plug 3 must not be exceeded insofar as doing so will degrade the contacts, making them unusable for the specified min. switching performance; thereafter, the switching performance for silver (AgSnO2) contacts (see "Technical Da" on page 1) will apply.

Temperature Ranges

For both series, versions of these devices are available for the following temperature ranges (see Table 7 on page 19).

•devices with built-on sensor: -50...+50 °C,

•devices with built-on sensor and neck tube: -50...+200 °C,

•devices with external sensor: -50...+200 °C and -50...+400 °C.

BEFORE INSTALLATION

IMPORTANT

Installation is to be performed only by qualified personnel.

IMPORTANT

In order to comply with protection rating IP65, unused M12 plugs must be capped (using the caps available as accessories). The caps included in the shipment provide protection against contamination during transportation, only.

IMPORTANT

Regardless of the current operating mode (basic mode / expert mode), all changes to output values take effect immediately (except when OUT1[2] is configured as a N.O./N.C. high-side/low-side or push-pull / inverted pushpull switch, in which case changes take effect only after the EDIT symbol has been extinguished). However, they will be stored permanently only if confirmed (via SAVE).

CAUTION

To avoid electrical shock or damage to the device, you must ensure that all of the device's connections are without voltage before attempting to detach plugs and cables.

Before installing the device and connecting the wiring, check to ensure that you are installing the proper device version. See section "Manufacturer's Plate" on page 6).

INSTALLATION

Dimensions

The housing (without process connection or plugs) has dimensions of 98 x 70 x 60 mm. The overall dimensions depend upon the number of plugs/cables and the sensor type. See also Fig. 72 on page 23.

Mounting and Orientation

Thermostats equipped with a built-on sensor (TST050...0200...) are screwed directly into the pipe via a G½" process connection.

Thermostats equipped with an external sensor (TST...EPT...) are secured to a wall or wiring box by means of a retainer (see Fig. 69 on page 18).

External sensors (P2-TVS...) are screwed directly into the pipe via a G½" process connection. Using the M8 plug accompanying the shipment, they are then connected electrically to the TST200E... or TST400E... thermostats via a sensor cable.

IMPORTANT

In order to avoid damage, never attempt to fasten the device by rotating the housing. Mount the process connection using a suitable hexagonal wrench. Mounting is to be performed by skilled personnel, only! The cable length must not exceed 3 m. Use only PT1000-A sensors; otherwise, the specified accuracy of 0.5% for the entire device cannot be guaranteed. The devices can be mounted in any orientation desired, however, for optimal legibility of the display, it is recommended that they be mounted in a vertical orientation. For optimal legibility of the display, but also to allow for more-flexible installation, the housing can be rotated on the sensor by approx. 320°.

Electrical Connection

All wiring must comply with applicable electrical codes and local ordinances (e.g. in Germany, in accordance with VDE regulations). To prevent damage to the device, the voltage at OUT1[2] must not exceed 36 Vdc. Refer to job or manufacturer's drawings for details.

IMPORTANT

In order to comply with protection class II, the auxiliary power source must be reliably separated from the network power supply circuits as per DIN VDE 0106, part 101. When correspondingly installed, the device complies with protection class II.

The connections for plugs 1 and 2 are protected against short-circuiting and incorrect polarity.

NOTE: No tampering with the device is allowed. Opening the device will invalidate the warranty.

NOTE: The devices must always be provided with power via either plug 1 and/or plug 2. It is sufficient to connect the power supply via one of these two plugs. However, in the event that power is supplied via both of these plugs, it must have the same polarity and potential.

Pin Assignment of Plug 1

All versions of both series come equipped with plug 1, an A- coded, five-prong M12 plug (see Fig. 3).

Fig. 3. A-coded M12 plug

3	MU1B-0248GE51 R0903

TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

Plug 1 has the following pin assignment:

1.Power supply (14...36 Vdc)

2.OUT2: an open-collector output which can be configured as an N.O./N.C. high-side/low-side or as a push-pull / inverted push-pull switch (see also Table 3 on page 8).

3.0 volt

4.OUT1: an open-collector output which can be configured as an N.O./N.C. high-side/low-side or as a push-pull / inverted push-pull switch (see also Table 3 on page 8).

5.Programming interface

NOTE: The voltage provided by OUT1[2] can be as much as 2.5 V lower than the device's power supply. Thus, assuming a power supply voltage of e.g. 14 V and that the voltage at OUT1[2] is logical

"high," then: 14 V ≥ "high" ≥ 11.5 V. Assuming that the voltage is logical "low," then: 2.5 V ≥ "low" ≥

0 V.

Pin Assignment of Plug 2

All versions of both series come equipped with plug 2, an A- coded, 5-prong M12 plug (see Fig. 3).

Plug 2 has the following pin assignment:

1.Power supply (14...36 Vdc)

2.WARN ("WARN" output; max. current load: 20 mA)

3.0 volt

4.AOUT (which can be configured as a 0...10 V / 10...0 V

output or as a 4...20 mA / 20...4 mA output, max. RL when configured as a current output = 500 Ω)

5.Programming interface

Pin Assignment of Plug 3

All versions of the PST...-R series come equipped with plug 3, a B-coded, three-prong M12 plug (see Fig. 4).

Fig. 4. B-coded M12 plug

NOTE: If inductive components are to be connected to the switch-over contact relay, it must be prevented from causing harmful interference or over-voltage.

Plug 3 has the following pin assignment:

1.common

2.N.C. (normally-closed)

3.N.O. (normally-open)

NOTE: The cable for connecting the relay is available as an accessory. Its green/yellow grounding terminal (PE) is not connected to the device (protection class II).

Connecting the Sensor

Each sensor is equipped with a 3-prong M8 plug (see Fig. 5).

4

1 3

Fig. 5. Pin assignment of the sensor's M8 plug

In the event that you would like to connect a two-wire PT1000 sensor to the device (see Fig. 6), you must (in the expert mode) correspondingly configure the device.

If you choose to use a two-wire sensor connection, you must take into account that the fact that the device does not automatically compensate for the wire resistance; rather, the wire resistance will fully affect the measuring results (see Table 1 for information on the resistance given a 10-meter-long [both ways] connection wire made of copper).

Table 1. Cross-section and resistance of conductor

wire cross-section (mm2)	0.14	0.22	0.5	0.75	1.5
wire resistance (Ω)	2.55	1.62	0.71	0.48	0.24

However, it is possible to adjust the device in order to compensate for this resistance (see section "Balancing the Device" on page 14). The temperature can thus be balanced within a range of ±5 °C.

An additional option is to employ a three-wire sensor connection (see Fig. 7). However, the prerequisite for this is that all three lines have identical properties and be exposed to the same temperatures.

	3
PT1000	U
	1

Fig. 6. Two-wire configuration

4
PT1000 3	U
1

Fig. 7. Three-wire configuration

MU1B-0248GE51 R0903

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TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

Technical Data on OUT1 and OUT2

•Max. current load per output: 250 mA.

•At the switch output, the voltage can diminish by as much as 2.5 V.

Example software configurations for e.g. OUT 1 are presented in Fig. 8 through Fig. 15.

	green	green	OUT1	plug 1		load
	1	2		1	2	(max. 250 mA)
			ON
			OFF			OUT1
			P	3	4
	EXPERT
	ZERO		OUT1	plug 1		load
				1	2	(max. 250 mA)
			ON
	orange green		OFF			OUT1
	1	2	P	3	4
			SP/RP
	Fig. 8. OUT1 as a normally-open low-side switch
	green	green	OUT1	plug 1		load
	1	2		1	2	(max. 250 mA)
			ON
			OFF			OUT1
			P	3	4
	EXPERT
	ZERO		OUT1	plug 1		load
				1	2	(max. 250 mA)
			ON
	orange green		OFF			OUT1
	1	2	P	3	4
			SP/RP

Fig. 9. OUT1 as a normally-closed low-side switch

	green	green	OUT1
	1	2
			ON
			OFF
			P
	EXPERT

FSO		OUT1
		ON
orange	green	OFF
1	2	P
		SP/RP

		plug 1
	1	2
	3	4	OUT1
			load
			(max. 250 mA)
		plug 1
	1	2
	3	4	OUT1
			load
			(max. 250 mA)

Fig. 10. OUT1 as a normally-open high-side switch

	green	green	OUT1
	1	2
			ON
			OFF
			P
	EXPERT

FSO		OUT1
		ON
orange	green	OFF
1	2	P
		SP/RP

plug 1

	1	2
	3	4	OUT1
			load
			(max. 250 mA)

		plug 1
	1	2
	3	4	OUT1
			load
			(max. 250 mA)

Fig. 11. OUT1 as a normally-closed high-side switch

	green	green	OUT1		plug 1
	1	2		1	2
			ON
			OFF			OUT1
			P	3	4
						load
	EXPERT					(max. 250 mA)
	ZERO FSO		OUT1		plug 1
				1	2
			ON
	orange	green	OFF			OUT1
	1	2	P	3	4
						load
			SP/RP
						(max. 250 mA)

Fig. 12. OUT1 as a push-pull switch with load connected to 0 V

	green	green	OUT1		plug 1
	1	2		1	2
			ON
			OFF			OUT1
			P	3	4
						load
	EXPERT					(max. 250 mA)
	ZERO FSO		OUT1		plug 1
				1	2
			ON
	orange	green	OFF			OUT1
	1	2	P	3	4
						load
			SP/RP
						(max. 250 mA)

Fig. 13. OUT1 as an inverted push-pull switch with load connected to 0 V

	green	green	OUT1	plug 1		load
	1	2		1	2	(max. 250 mA)
			ON
			OFF			OUT1
			P	3	4
	EXPERT
	ZERO FSO		OUT1	plug 1		load
				1	2	(max. 250 mA)
			ON
	orange	green	OFF			OUT1
	1	2	P	3	4
			SP/RP

Fig. 14. OUT1 as a push-pull switch with load connected to the power supply

	green	green	OUT1	plug 1		load
	1	2		1	2	(max. 250 mA)
			ON
			OFF			OUT1
			P	3	4
	EXPERT
	ZERO FSO		OUT1	plug 1		load
				1	2	(max. 250 mA)
			ON
	orange	green	OFF			OUT1
	1	2	P	3	4
			SP/RP

Fig. 15. OUT1 as an inverted push-pull switch with load connected to the power supply

When OUT1[2] are configured as high-side switches, then logical "high" is switched to the corresponding output. When configured as low-side switches, logical "low" is switched to the corresponding output as soon as it becomes active. In

5	MU1B-0248GE51 R0903

TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

the default shipping setting, OUT1[2] are configured as normally-open low-side open-collector switches (see Fig. 8).

the device does not recognize any error, the WARN output will remain inactive, and is switched to the power supply.

Technical Data on the Analog Output (AOUT)

•configurable either as a 0...10 V / 10...0 V output or as a 4...20 mA / 20...4 mA output.

•max. RL when configured as a current output = 500 Ω.

				plug 2
EXPERT	EDIT	ATT	1	2
WARN
OUT2			3	4	AOUT
OUT1 SPRP					0...10 V
AOUT ZERO FSO INV
	Fig. 16. AOUT as a 0...10 V analog output
				plug 2
EXPERT	EDIT	ATT	1	2
WARN
OUT2			3	4	AOUT
OUT1 SPRP					10...0 V
AOUT ZERO FSO INV
	Fig. 17. AOUT as a 10...0 V analog output
				plug 2
EXPERT	EDIT	ATT	1	2
WARN
OUT2			3	4	AOUT
OUT1 SPRP					4...20 mA
AOUT ZERO FSO INV						Ω
					RL max. 500
	Fig. 18. AOUT as a 4...20 mA analog output
				plug 2
EXPERT	EDIT	ATT	1	2
WARN
OUT2			3	4	AOUT
OUT1 SPRP					20...4 mA
AOUT ZERO FSO INV						Ω
					RL max. 500

Fig. 19. AOUT as a 20...4 mA analog output

Technical Data on the WARN Output

•maximum current load: 20 mA

The WARN output (pin 2) is not configurable; rather, it is permanently wired as a high-side switch. See Fig. 20.

			plug 2		WARN
	EXPERT EDIT	ATT	1	2
	WARN		10 kτ
	OUT2		internal
			3	4
	OUT1 SPRP				load
	AOUT ZERO FSO INV
					(max. 20 mA, 14...36 Vdc)

1 2

Fig. 20. WARN output (permanent high-side)

When the device recognizes an error (see section "Error Codes" on page 8), the WARN output will become active and is switched (via a pull-down resistor) to 0 V (logical "low). If

Manufacturer's Plate

The manufacturer's plate contains important technical data.

TST050G12100

-50...+50 °C

14...36 (> 50 °C: 14...30) Vdc 100mA

Imax of OUT1[2]: 250 mA

Analog Out: 0...10V max. 1mA 4...20mA max. 500

IP65 0138

F.-Nr.: 00577410005

FEMA Regelgeräte

Honeywell AG

D-71101 Schönaich

Made in Germany www.honeywell.de\fema

TST050G12100-R

-50...+50 °C

14...36 (>50 °C: 14...30) Vdc 100mA

Imax of OUT1[2]: 250 mA

Analog Out: 0...10V max. 1mA 4...20mA max. 500

Relays:

AC1: max. 690VA

AC15: max. 230VA

IP65 0138

F.-Nr.: 00577410001

FEMA Regelgeräte

Honeywell AG

D-71101 Schönaich

Made in Germany www.honeywell.de\fema

Fig. 21. Manufacturer's plate / TST... and TST...-R series

The manufacturer's plate identifies the device model in the topmost line and below that the following information:

•the nominal temperature range,

•the permissible power supply,

•the max. permissible current load at OUT1[2],

•the max. permissible current load of and max. permissible resistance at the analog output,

•the date code,

•the manufacturing number, and

•an information symbol referring the installer to these Installation Instructions.

Hardware Features

All configuration and parameterization data is stored in the device.

Regardless of the current operating mode (basic or expert mode), changed parameters and configurations become immediately effective, but are permanently stored in the device's memory only after confirmation via SAVE.

In the event of a power loss, only permanently stored values will be again available once power has been restored. Unstored parameters and configurations are lost! In the event of a power loss during the transfer of data into device's memory (via SAVE), data may be lost.

LCD Display Screen

The LCD display screen (see Fig. 22) features a four-digit display, three decimal points, and a minus sign.

NOTE: When cleaning the display screen, use no harsh cleaning agents.

In addition to the four-digit numeric display, the LCD display screen can also present numerous additional symbols useful in operating the device:

MU1B-0248GE51 R0903

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TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

EXPERT EDIT ATT WARN WIN OUT2 OUT1 SPRP

AOUT ZERO FSO INV

Fig. 22. LCD display screen

Bargraph () and Trend Display ()

The bar graph (at the top of the screen) consists of several individual segments. The trend display (to the left and right of the bar graph) consists of two arrowheads.

•When the device is displaying the current temperature,

the left () or right () arrowhead (respectively) will appear to indicate dropping or rising temperature.

•While an output is being parameterized (in the basic mode) to act as a max. or min. temperature monitor, the right () or left () arrowhead (respectively) will appear.

•When an output is being configured (in the expert mode) to act as a max. or min. temperature monitor, the right

() or left () arrowhead (respectively) together with three segments of the bar graph will appear.

•When the device is displaying the current temperature, the number of segments of the bar graph proportional to the current temperature will appear. Thus, if the current temperature is equal to the min. measurable temperature, no segments will be displayed; if the current temperature is equal to the device's max. measurable temperature, all of the segments will be displayed.

•When parameterizing the device, a single segment of the bar graph () will appear at a position corresponding to the set value.

•When viewing the max./min temperature or the time elapsed since the max./min temperature were registered, the max. drag indicator symbol ( ) or min. drag indicator symbol (), respectively, is displayed.

EDIT

After the EDIT symbol has been made to appear (see sections "Setting Parameters in the Basic Mode" on page 12 and "Configuring in the Expert Mode" on page 15), values (in the basic mode) or units (in the expert mode) can be changed by rotating and pressing the RPB (rotary/push button).

Units

You may choose from among the following temperature units:

•°C

•°F.

Settings

These symbols appear during parameterization / configuration.

ATT	Switch-ON/OFF delay (in seconds)
EXPERT	Expert mode (enabling the user to change
	measurement units, switch-points, etc.)
WARN	Warning / alarm

WIN			Window monitor (for monitoring a temperature
			range)
OUT1			Output 1
OUT2			Output 2
SP			Switch-point or, in the case of monitoring a
			temperature window (WIN), the upper or lower
			temperature limit
RP			Reverse switch-point or, in the case of monitoring
			a temperature window (WIN), the upper or lower
			temperature limit
			OUT1[2] configured to be an N.O. switch (FSO or
			ZERO also displayed) or as push-pull switch (FSO
			and ZERO also displayed)
			OUT1[2] configured to be an N.C. switch (FSO or
			ZERO also displayed) or as inverted push-pull
			switch (FSO and ZERO also displayed)
AOUT			Analog output (if the current temperature is
			outside of the span, the AOUT symbol will not be
			visible on the screen)
ZERO			Zero-point of the analog output. Also, it appears if
			OUT1[2] has been configured to be a low-side
			switch (i.e. the device switches logical "low" to the
			output)
FSO			Full-Scale Output, i.e. upper limit of the analog
			output. Also, it appears if OUT1[2] has been con-
			figured to be a high-side switch (i.e. the device
			switches logical "high" to the output)
INV			Inversion of the analog signal (i.e. output is then
			configured as 10...0 V or 20...4 mA instead of as
			0...10 V or 4...20 mA, respectively)

See also sections "Sequence of Display Screens in Basic Mode" on page 10 and "Overview of Parameterization and Configuration" on page 20, where you will find an explanation of when the various different screens will appear and for additional information on the meanings of the individual symbols.

Time-Out Function

The time-out represents a 1-minute period during which the device will remain in the basic mode or expert mode (as the case may be) without automatically reverting to the display state (whereupon already-changed but not-yet-saved values will be lost). During the time-out, any manipulation of the RPB will restart the internal clock, thus prolonging the time-out for an additional 1 minute and allowing the user to continue parameterization and/or configuration.

IMPORTANT

If the user allows (by not manipulating the RPB for 1 minute) the time-out to completely elapse, the device will automatically revert to the display state (i.e. show the current temperature), and already-changed but not-yet- saved values will be lost.

However, when the device is in the expert mode, the time-out is enabled only as long as no configuration has been changed. I.e. changing a configuration disables the time-out function.

Recognition of Implausible Settings

CAUTION

The software automatically recognizes implausible settings of SP, RP, ZERO, and FSO. The last-set value takes

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TST... AND TST...-R ELECTRONIC TEMPERATURE SWITCHES/TRANSMITTERS

precedence over the first-set value. Thus, upon permanently storing the last-set value, the first-set value will be shifted right up to the second-set value, as necessary.

In the case of an implausible setting, the corresponding LED (for OUT1 or OUT2, as the case may be) will light up red. When this setting is then stored, the value of the other output (OUT 2 or OUT1, as the case may be) will be automatically shifted. If your parameterizations are plausible, the red LED is extinguished and the current switching status is displayed. Plausible parameterizations are explained below.

Parameterizing the Device to Act as a Switch

When configuring an output as a max. temperature monitor, SP must be greater than RP; further, a predefined min. difference between SP and RP must be observed. If this condition is not observed, the corresponding LED will turn red, and upon permanently storing the settings, the other value (SP or RP, respectively) will be shifted; SP will then be equal to RP. The LED will remain red until the min. difference is set.

When configuring an output as a min. temperature monitor, SP must be less than RP; further, a predefined min. difference between SP and RP must be observed. If this condition is not observed, the corresponding LED will turn red, and upon permanently storing the settings, the other value (SP or RP, respectively) will be shifted; SP will then be equal to RP. The LED will remain red until the min. difference is set.

CAUTION

After setting the switch-point or reverse switch-point of an output to act as a min. or max. temperature monitor and after storing this configuration, you must check if the corresponding switch-points indeed have the desired values and that the red LED has been extinguished.

NOTE: When configuring an output to act as a window monitor (WIN), the only restriction applying to the relative values of SP and RP is that the min. difference be observed. SP can be greater or less than RP.

Parameterizing the Analog Output

When configuring the analog output in order to define a span (i.e. that portion of the device's total measuring range which is of particular interest to you), FSO minus ZERO must be greater than or equal to 30% of the device's total measuring range. If this is not the case, no error is displayed; rather, the first-set value (i.e. FSO or ZERO, as the case may be) will be automatically shifted, as necessary.

NOTE: The specified accuracy refers to the respective temperature range. E.g. at FSO minus ZERO = 50%, the accuracy then amounts to 1% of the correspondingly narrower range.

NOTE: After shifting the value of ZERO, the value of FSO must be checked and vice-versa.

If the current measured temperature is outside of the selected span (i.e. either below ZERO or above FSO), the AOUT symbol will not be visible on the screen and the current temperature will be displayed. When configured (in the expert mode) as FCTV, the analog signal is limited to 0 V

or 10 V, as the case may be; when configured as FCTA, it is limited to 4 mA or 20 mA, as the case may be.

Indicator LEDs

The condition (status) of the switch outputs is indicated by means of two LEDs located below the display screen. These two LEDs can display three different colors having the following meanings:

•Orange: The corresponding output is active.

•Green: The corresponding output is not active (if specified as a WARN output, "green" likewise means that the WARN output is not active)

•When editing (EDIT) SP/RP, only the LED of that output being edited is illuminated; in the event of implausible values for RP and/or SP, the corresponding LED will light up red.

•If both indicator lights are illuminated red and the "WARN" symbol appears: WARN mode.

•If both indicator lights are illuminated, but the "WARN" symbol does not appear: Implausible RP/SP for both outputs.

Table 2. Meaning of LED indicators

LED status		meaning
LED 1	LED 2	OUT1 status	OUT2 status
orange	orange	active	active
green	green	inactive	inactive
orange	green	active	inactive
green	orange	inactive	active
red	red	error (WARN) or 2x implausible
red	--	implausible	--
--	red	--	implausible

Table 3. Potential of outputs in dependence upon their configuration and status

	symbols in						configuration	output signal
	display							active	inactive
	FSO,						N.O. high-side	"high"	floating
	ZERO,						N.O. low-side	"low"	floating
	FSO,						N.C. high-side	floating	"high"
	ZERO,						N.C. low-side	floating	"low"
	ZERO, FSO,						push-pull	"high"	"low"
	ZERO, FSO,						inv. push-pull	"low"	"high"

N.O. = normally-open; N.C. = normally closed

Error Codes

A number of different error codes can appear in the display, serving to indicate a variety of faulty states.

	Table 4. Error codes
text	meaning
***1	sensor failure
**1*	power supply voltage too low
*1**	excessively low ambient temperature
*2**	excessively high ambient temperature
1***	OUT1 is overloaded
2***	OUT2 is overloaded
3***	OUT1 and OUT2 both overloaded

MU1B-0248GE51 R0903

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