ABB SACO 16 A3, Product Manual

Table 3: External control inputs

Audible alarm reset

NO contact circuit

Alarm acknowledge

NO contact circuit

Alarm channel reset

NO contact circuit

Remote testing

NO contact circuit

Control of unit into LOCAL mode

NO contact circuit

Control of unit into REMOTE mode

NO contact circuit

Clock synchronization

NO contact circuit, pulse length
> 100 ms, 48 V dc, 4 mA

Table 4: Data communication

Transmission mode

Fibre-optic serial bus

Coding

ASCII

Data transfer, selectable

4800 or 9600 Bd

Electrical/optical bus 
connection module, 
powered from the host 
unit

for plastic core cables

SPA-ZC 21BB/S

for glass fibre cables

SPA-ZC 21MM/S

Electrical/optical bus 
connection module, 
powered from the host 
unit or from an external 
power source

for plastic core cables

SPA-ZC 17BB/S

for glass fibre cables

SPA-ZC 17MM/S

Table 5: Auxiliary supply modules

Type of module

SPGU 240A1

rated voltages U

n

110/120/230/240 V ac
110/125/220 V dc

operative range

80…265 V ac/dc

SPGU 48B2

rated voltages U

n

24/48/60 V ac

operative range

18…80 V dc

Power consumption under quiescent/operation 
conditions

~20 W/~30 W

Table 6: Tests and standards

Test voltages

Between channel and control inputs and annunciator case, supply inputs and 
relay outputs
Dielectric test voltage (IEC 60255-5)

500 V, 50 Hz, 1 min

Impulse test voltage (IEC 60255-5)

1 kV, 1.2/50 

µ

s, 0.5 J

HF test voltage (IEC 60255-5)

1 kV, 1 MHz

Test voltages

Between supply inputs and case, relay outputs and case, supply inputs and 
relay outputs between themselves
Dielectric test voltage (IEC 60255-5)

2 kV, 50 Hz, 1 min

Impulse test voltage (IEC 60255-5)

5 kV, 1.2/50 

µ

s, 0.5 J

HF test voltage (IEC 60255-5)

2.5 kV, 1 MHz

Environmental conditions

Ambient service temperature range 
without matrix display

-10…+55

°

C

Ambient service temperature range, 
including matrix display

-10…+45

°

C

Long term damp heat withstand 

(IEC 60068-2-3)

<95%, +40

°

C, 56 d/a

Ambient transport and storage 
temperature range

-20…+55

°

C

Degree of protection by enclosure when 
panel-mounted

IP 54

Weight of annunciator unit

~4.5 kg

Analog Annunciator Unit

Product Guide

SACO 16 A3

1MRS750405-MBG

6