Honeywell TC Series User Manual

TC · Edition 08.17 22
Function
3.1.3 Test procedure for TC 1, TC 2, TC 3
Depending on the pressure between the valves p
z
, the
tightness control TC carries out a check using test pro-
cedure A or B:
If pressure p
z
> p
u
/2, program A starts.
If pressure p
z
< p
u
/2, program B starts, see page 23
(Test procedure B).
Test procedure A
Valve V1 opens for the opening time t
L
= 3 s and closes
again. During the measurement time t
M
, the tightness
control checks the pressure p
z
between the valves.
If pressure p
z
is less than half the inlet pressure p
u
/2,
valve V2 is leaking.
If pressure p
z
is greater than half the inlet pressure p
u
/2,
valve V2 is tight. Valve V2 is opened for the set opening
time t
L
. V2 closes again.
During the measurement time t
M
, the tightness control
checks the pressure p
z
between the valves.
If pressure p
z
is greater than half the inlet pressure p
u
/2,
valve V1 is leaking.
If pressure p
z
is less than half the inlet pressure p
u
/2,
valve V1 is tight.
The tightness test can only be performed if the pres-
sure downstream of V2 is around atmospheric pressure.
t
L
= 3 s
t
M
–
–
+
+
+
–
t
M
p
z
>
p
u
2
V1
V1
V1
p
z
>
p
u
2
V2
OK
V2 V1
OK
V2
V2
t
L
= 3 s
t
L
= 3 s
t
M
+
–
t
M
p
z
>
p
u
2
+
–
V2
V2
V2
p
z
>
p
u
2
V1
OK
V1 V2
OK
V1
V1
t
L
= 3 s
p
u
p
z
p
z
>
p
u
2
TEST
V1 V2
Test procedure A Test procedure B
START

Honeywell TC Series Specifications

General

Category	Control Unit
Enclosure Rating	IP20
Input Voltage	24 VDC
Communication Protocol	Modbus RTU, BACnet MS/TP
Series	TC Series

Summary

Tightness Controls TC

1 Application

TC Model Application Overview

Details on application examples for TC 1V, TC 1C, TC 1, TC 2, TC 3, and TC 4 models.

2 Certification

TC 1, TC 2, TC 3 Certifications

Certifications for TC 1, TC 2, and TC 3 models, including SIL and PL.

TC 4 Certifications

Certifications for TC 4 model, including UL, FM, AGA, CE.

3 Function

TC 1, TC 2, TC 3 Functionality

Functionality, connection diagrams, and test procedures for TC 1, TC 2, TC 3.

TC 4 Functionality

Functionality, connection diagrams, and test procedures for TC 4.

4 Selection

TC 1, TC 2, TC 3 Selection

Selection tables and type codes for TC 1, TC 2, TC 3 models.

TC 4 Selection

Selection tables and type codes for TC 4 model.

5 Project Planning Information

Auxiliary Valves and Start Rate

Guidelines for selecting auxiliary valves and minimum start rate for slow opening valves.

Installation and Electrical Connections

Instructions for installing TC units and their electrical connections.

Relief Line Sizing

Guidelines for determining the correct size for relief lines.

6 Accessories

Sockets and Cables

Details on standard sockets and valve connection cables.

External Pressure Switch for TC 4

Details on pressure switches DG, DG..C for TC 4 and their adjustment.

7 Technical Data

TC 1, TC 2, TC 3 Data

Electrical, environmental, and mechanical data for TC 1, TC 2, TC 3.

TC 4 Data

Electrical, mechanical, and environmental data for TC 4.

Indicators, Dimensions, and Conversions

Operating controls, dimensions, and unit conversion information.

Safety Characteristic Values

Safety characteristic values like SIL, PL, DC, PFHD for TC 1, TC 2, TC 3.

8 Safety Information (EN 61508-2)

General Safety Aspects

General safety, type of action, operating mode, and classifications for TC 1, TC 2, TC 3.

Interfaces and Connections

Electrical wiring, terminals, inputs, and outputs for TC 1, TC 2, TC 3.

SIL and PL Levels

Safety Integrity Level (SIL) and Performance Level (PL) for TC 1, TC 2, TC 3.

9 Maintenance Cycles

10 Glossary

Key Term Definitions

Definitions for terms like Tightness Control, VPS, Safety Interlocks, DC, PFHD, MTTFd.

Contact Information