RTK UC625 series User manual

1
UC625 Compact Alarm Annunciator Rev 17

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REV DATED DESCRIPTION AUTHOR APPROVED
10 01-05-07
Option M4 added to provide Lamp / Audible
Test
P.Cartmell T. McLeman
11 22-05-07 Option M3 Response Time Spec P.Cartmell T. McLeman
12 29-10-07 Repeat Relay Ratings clarified P.Cartmell T. McLeman
13 02-11-07 Signal Supply Monitoring & Terminals with
locking screws added
P.Cartmell T. McLeman
14 23-07-08 Sleep Mode Switch wiring clarified P.Cartmell D. Fishkin
15 31-07-08 Powered Inputs & Switch Settings Clarified P.Cartmell D. Fishkin
16 14-01-09 ASIC versions clarified P.Cartmell D. Fishkin
17 14-04-09 Wiring Drawings updated P.Cartmell D. Fishkin
18 06-06-11 Isolation Diode details added to sleep mode P.Cartmell D. Fishkin
© RTK Instruments LTD 2004
The copyright in this work is vested in RTK Instruments Ltd and this document is issued for the
purpose only for which it is supplied. No licence is implied for the use of any patented feature. It must
not be reproduced in whole or in part, or used for tendering or manufacturing purposes except under
an agreement or with the consent in writing of RTK Instruments Ltd and then only on the condition that
this notice is included in any such reproduction. Information furnished is believed to be accurate but no
liability in respect of any use of it is accepted by RTK Instruments Ltd.
Important Note
The UC625 system described herein operates on a logic voltage of 24VDC and as
standard 24VDC is used for the field contact supply voltage.
External power supplies using higher voltage AC/DC primary sources and optional high
voltage field contact voltages may be present if this is the case please ensure the
necessary precautions are taken

RTK Series UC625 Annunciator
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Table Of Contents
Table Of Contents................................................................................................................3
Figures..................................................................................................................................6
Tables...................................................................................................................................7
Introduction..........................................................................................................................9
Model Number Description ...............................................................................................10
Option Codes..................................................................................................................................... 10
System Description and Features ....................................................................................11
General .............................................................................................................................................. 11
Alarm Card......................................................................................................................................... 11
Reliable Annunciation........................................................................................................................ 11
Supply/Pushbutton/Relay Card (SPR)............................................................................................... 11
Power Failure Monitoring................................................................................................................... 11
Serviceability...................................................................................................................................... 12
No Special Service Tools Required................................................................................................... 12
Inputs & Outputs................................................................................................................13
Customer Connections ...................................................................................................................... 13
Annunciator Inputs............................................................................................................................. 13
Optically Coupled Inputs.................................................................................................................... 13
Signal Duplicating Relays.................................................................................................................. 13
Response Time.................................................................................................................................. 13
Common Alarm Group Relay [GP] .................................................................................................... 14
Reflash Function................................................................................................................................ 14
Dual Audible Alarm Feature............................................................................................................... 14
Dual Horn Relays [HNA-HNB]........................................................................................................... 14
Dual Power Monitoring Relays .......................................................................................................... 14
Mechanical Details.............................................................................................................15
Alarm Card......................................................................................................................................... 15
SPR Card – Supply / Pushbutton/Relay............................................................................................ 15
System Assembly .............................................................................................................................. 15
UC625 Dimensions............................................................................................................................ 15
Unit Depth.......................................................................................................................................... 15
Sequences..........................................................................................................................16
Summary............................................................................................................................................ 16
First-up Sequences............................................................................................................................ 16
Automatic Reset................................................................................................................................. 16
Non-latch Sequence (No lock-in)....................................................................................................... 16
Reflash Feature ................................................................................................................................. 16
Ringback Sequence........................................................................................................................... 17
Two Pushbutton Operation................................................................................................................ 17
Status Only Operation ....................................................................................................................... 17
Option M4 .......................................................................................................................................... 17
Sequence Configuration and Tables................................................................................18
Manual Reset ISA-Sequence M ........................................................................................................ 18
Automatic Reset ISA-Sequence A.................................................................................................... 18
Non Lock-in Function ISA-A-4 Sequence.......................................................................................... 19

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Ringback ISA-R Sequence............................................................................................................... 19
Automatic Reset First-up ISA-F1A Sequence................................................................................... 20
Manual Reset First-up ISA-F2M-1 Sequence.................................................................................... 20
Status Only ISA-A-4-5-6 Sequence................................................................................................... 21
Features..............................................................................................................................22
Input Configuration ............................................................................................................................ 22
Signal Duplicating Relays.................................................................................................................. 22
Repeat Relay Mode Of Operation ..................................................................................................... 23
Input Follower .................................................................................................................................... 23
Logic Follower.................................................................................................................................... 23
Operation of Repeat Relays During Test........................................................................................... 23
System Test....................................................................................................................................... 23
Disable Horn On System Test Option “DHT” (Model Suffix Code M1).............................................. 23
LED Indication.................................................................................................................................... 23
Dual Audibles And Dual Horn Relays................................................................................................ 24
Integral Horn Disable......................................................................................................................... 24
Auto-Acknowledge Feature ............................................................................................................... 24
Common Alarm Relay........................................................................................................................ 25
Reflash Option................................................................................................................................... 25
Input Follower. ................................................................................................................................... 26
Logic Follower.................................................................................................................................... 26
Sleep Mode........................................................................................................................................ 26
1. Specification.............................................................................................................26
Optically Coupled Inputs.................................................................................................................... 27
Outputs .............................................................................................................................................. 27
Pushbuttons....................................................................................................................................... 28
General .............................................................................................................................................. 28
Installation..........................................................................................................................29
Cut-out Dimensions ........................................................................................................................... 29
Cabinet Fixing.................................................................................................................................... 29
Channel Numbering........................................................................................................................... 30
Connection Details............................................................................................................................. 31
Aux Supply Option............................................................................................................................. 32
Signal Supply..................................................................................................................................... 33
Signal Supply Monitor Relay.............................................................................................................. 33
Signal Supply Options ....................................................................................................................... 33
Earthing.............................................................................................................................................. 33
Remote Pushbutton Connections...................................................................................................... 33
Standard Inputs Connections ............................................................................................................ 35
Powered Inputs @ 24VDC................................................................................................................. 36
Higher Voltage Powered Inputs......................................................................................................... 37
Sleep Mode........................................................................................................................................ 38
System DIL Switch Location and Functions....................................................................39
DIL Switch Functions On Alarm Cards.............................................................................................. 39
Identifying Card Types....................................................................................................................... 40
Alarm Card Input Response Settings STANDARD VERSIONS ...................................................... 41
Alarm Card Input Response Settings M3 / M4 OPTION VERSIONS................................................ 42
Alarm Card Input & Sequence Settings (Set In Pairs)....................................................................... 43
Alarm Card Relay And Horn Settings (Set In Pairs).......................................................................... 44
DIL Switch Settings SPR Card .......................................................................................................... 45
SPR Card Horn, Relay And Pushbutton Settings.............................................................................. 46
Automatic Acknowledge Timer (Located On SPR Card).................................................................. 47
Internal Horns Disable (Located On SPR Card)............................................................................... 47

RTK Series UC625 Annunciator
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Maintenance.......................................................................................................................48
No Special Tools Required................................................................................................................ 48
Legend Plate Removal ...................................................................................................................... 48
Film Legend Engraving...................................................................................................................... 48
Alarm Card or SPR Card Removal.................................................................................................... 48
Super-Bright LED’s............................................................................................................................ 48
Fuse replacement.............................................................................................................................. 48
Expansion Units.................................................................................................................50
Master and Expansion UC625 Units ................................................................................................. 50
Options...............................................................................................................................53
Option 00 Horn Disable On System Test ......................................................................................... 53
Option 01 Lamp Test Instead of Functional Test............................................................................... 53
Option 02 Ringback Horn Disabled ................................................................................................... 53
Option 03 ISA R12 Sequence............................................................................................................ 53
Option 04 Response Times............................................................................................................... 53
Option 05 Lamp / Audible Test.......................................................................................................... 53
Multiple Option Codes ....................................................................................................................... 53
Trouble Shooting Guide....................................................................................................54
Other RTK Products ..........................................................................................................58
Card Switch Settings Required To Set Alarm Sequences ..............................................59

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Figures
Page No
1 Example Of A 12 And 20 Way UC625 Alarm Annunciator 8
2 Panel Fixing Arrangement 29
3 Channel Numbering 30
4 Typical Connection Details 31
5 Optional Remote Pushbutton Connections 33
6 Standard Signal Input Connections 33
7 24VDC Powered Signal Input Connections 34
8 48/110/250VAC/DC Powered Signal Input Connections 34
9 Sleep Mode 35
10 Alarm Card Showing DIL Switches 36
11 Alarm Card DIL Switch details (SW3 and SW5) 37
12 Alarm Card DIL Switch details (SW4 and SW6) 38
13 SPR Card Showing DIL Switches (Supply, P.B.’s and Relays) 39
14 SPR Card DIL Switch details (SW5) 40
15 Signal Supply Fuse Location 42
16 Fuse Location For Systems Using Aux. 24VDC Supply 42
17 UC625 Master & Expansion Rear Terminal Views 44
18 UC625 Expansion Units with Ribbon Expansion Sockets 44

RTK Series UC625 Annunciator
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Tables
1
UC625 Dimensions
15
2 ISA-M Sequence 18
3 ISA-A Sequence 18
4 ISA-A-4 Sequence 19
5 ISA-R Sequence 19
6 ISA-F1A Sequence 20
7 ISA-F2M-1 Sequence 20
8 ISA-A-4-5-6 Sequence Status Only 21
9 Input Configuration 22
10 Repeat Relay Coil State 22
11 Repeat Relay Contact State 22
12 Repeat Relay Mode Of Operation 23
13 Repeat Relay Operation During Test 23
14 Horn Drive Signal Configuration 24
15 Horn relays Contact State 24
16 Integral Horn Enable / Disable 24
17 Auto Ack. Timer Settings 24
18 Common Alarm Signal Enable 25
19 Common Alarm Contact State 25
20 Common Alarm Reflash Option 25
21 Common Alarm Signal Mode Of Operation 26
22 Cut-Out Dimensions 29
23 Power Connections 31
24 Optional Aux Supply 32
25 Pushbutton Options 32
26 Alarm Card DIL Switch Functions 36
27 Alarm Card Input Response Settings 37
28 Auto-Ack Timer (Located on SPR Card) 40
29 Internal Horns Disable on SPR Card 40
30
Switch Settings PER Alarm Sequence
51

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INSTRUMENTS
TEST
MUTE
RESET
ACK
SUPPLY 1
SUPPLY 2
SUPPLY FAIL
AUX DC
SUPPLY FAIL
UC625
MAIN DC
UC625 RESET
ACK
MUTE
TEST
SUPPLY 2
SUPPLY 1
INSTRUMENTS
Examples of a 20 and 12 way UC625 Alarm Annunciator
Figure 1

RTK Series UC625 Annunciator
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Introduction
The RTK UC625 Series Alarm Annunciator system is designed to give LED indication of an alarm
condition, where a high degree of reliability and flexibility is required.
Each system comprises a compact cabinet, removable legend plate, universal Alarm Cards and a
Supply/Pushbutton/Relay (SPR) Card which gives maximum annunciator density whilst maintaining a
practical legend area and neat front panel appearance.
DIL switches, situated on each of the Alarm Cards permit easy selection of annunciator sequences as
listed in the ISA Publication “Alarm Sequences and Specifications S18.1 – 1979 (R1985)”.
As the system is fully field-programmable on a per pair of alarm basis, the operating specification, of
both alarm sequence and function, can be changed during commissioning, or at a later date after the
equipment is installed. This means that stocking requirements may be minimised, since all annunciator
cards are interchangeable.
Reliability of operation is increased over conventional annunciators by the use of application specific
integrated circuits (ASIC's), which are capable of complete system control. When the annunciator is
initially switched on, control is arbitrarily allocated to any one of the ASIC's on any of the Alarm Cards,
hence the annunciator requires no control or master module, failure of which could jeopardise the
whole system.
If the Alarm Card is removed or an ASIC goes faulty then control is randomly allocated to another
ASIC on another Alarm Card, hence the worst fault that could normally occur is the loss of one card.
The use of ASIC's also results in a very low component count, again improving system reliability.
The UC625 features an integral, dual power supply capable of accepting a supply voltage from either
88-265VAC OR 88-360VDC which allows the user to connect the unit directly to a main and aux
supply to provide redundant operation.
As an option, if specified at time of order, the second supply voltage can be manufactured to allow
direct operation from an Aux.24VDC Supply Voltage in the range 19 to 31VDC.
As standard an internally generated 24VDC is used as a signal supply voltage, which is used for
distribution to the associated field contacts. The 24VDC signal supply is designed to be present if
either the primary or secondary supply is available to ensure 100% redundancy.
Note:- When using the direct powered input options the signal supply voltage is derived from outside
the unit, by others, and redundancy is therefore dependent on the signal supply voltage being
available at all times.
On systems supplied after January 1st 2008 the signal supply voltage is provided with a monitor relay.
Two alarm channels are dedicated to monitor the dual supply Inputs and alert the operator if there is a
loss or failure of either.
Accessibility for servicing is excellent, being accomplished from the front of the panel with only a
screwdriver required to access the alarm or Supply / Pushbutton / Relay card.

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Model Number Description
UC625 = Model no prefix
** = Number of available alarm channels [Not including the 2 power failure alarms]
** = LED colour RD = Red (Standard)
H = Input supply 1 universal (88-360VDC or 88-265VAC)
** = Input supply 2 specify option H or L
024D = 24VDC signal supply voltage OR
Options for 48/110/250VAC/DC signal supply inputs
R = Individual channel signal duplicating relays fitted
MODEL
NO OF
ALARMS
LED COLOUR SUPPLY 1 ** SUPPLY 2 SIGNAL SUPPLY
REPEAT
RELAYS
UC625
12
RD = Red
YL = Yellow
AM = Amber
GN = Green
WH = White
IN = Intermixed
H = Universal
88 to 265VAC
or
88 to 360VDC
Optional
L = 24VDC
OR
H = Universal
88 to 265 VAC
or
88 to 360 VDC
Standard
R = Repeat
Relay
Option
Fitted
16
024D = 24VDC
20
Optional Externally
Powered Inputs
24
28
32
048 = 48VAC/DC
36
110 = 110VAC/DC
40
250 = 250VAC/DC
Typical Model No
UC625 40 RD H H 024D R – M*
M* Option code see below)
Please note:- If more than 40 ways are required as a single system expansion UC625 units can be
connected via the expansion ribbon bus connector as detailed later in the manual on all units shipped
after August 2004
Option Codes
These Codes are added as a suffix to the Model No and MUST be specified at the time of ordering.
M1 = Horn disabled on System Test
M2 = Modified Ringback sequence, disabled ring back audible and lamp test in place of system test.
M3 = ISA R12 Ringback sequence, disabled Ringback horn, lamp test in place of system test and
response time changed to 5mS trip 5S pre-alarm.
M4 = ISA R12 Ringback sequence, disabled ring back audible, lamp test in place of system test,
response time changed to 5mS trip and 5S pre-alarm and combined Lamp / Audible Test
pushbutton function.