General info
This chapter describes standard cabinets that are available for Safety Manager systems.
Using standard cabinets provides several advantages over specifically designed cabinets. Honeywell SMS policy is aimed at delivering standard engineered, tested and certified (modular) concepts to the market for these main reasons:
Reusing existing concepts saves valuable time (e.g. engineering, testing, certification).
Individual projects will be delivered at a guaranteed level of quality and in short turn-around times.
Applying modularity within a proven overall concept provides for flexibility toward customers.
Typically, Safety Manager is installed in a standard cabinet. It is possible to add or rearrange certain components or change their location within the cabinet.
Also, standard Safety Manager remote cabinets are available. Depending on specific application needs one or more types can be opted for.
Should you not wish to follow the standard cabinet layout, then you can only do so after prior consult with Honeywell SMS.
Standard Rittal enclosure for Safety Manager
The standard enclosure for Safety Manager is based on two cabinet types available in the Rittal TS 8 series.
Safety Manager enclosures are default equipped with a swing frame, support glands, fans, an enclosure frame with steel doors, louvres and filters, an enclosure light, a thermostat, earthing strips, a mounting plate, gland plates, a rear panel and a roof or bottom plate. Side panels are mounted to the outer walls.
A standard Safety Manager enclosure is painted in RAL 7035, with RAL 7022 for the plinth.
Below sections provide more details related to the Rittal TS series as assembled and delivered by Honeywell SMS.
Enclosure light
The Rittal enclosure light (PS 4155.000) has an auto-select input voltage detector (110/230 V AC) and is equipped with a motion sensor. You no longer require an additional door switch. If the shipping section consists of more than one Rittal cabinet enclosure, all cabinets will have an enclosure light. All enclosure lights use the same feeder. The feeder is wired from the first cabinet (with an interconnection cable) to the second and, if applicable, from the second to the third cabinet, etc.
Fans
A pair of fans are mounted in the roof. The following types are available:
Papst, type 4184NX, operating voltage 24 V DC
Honeywell SMS fan unit which can be delivered in 3 voltages 24 V DC, 115 V AC, and one for 230 V AC. For a data sheet of the 24 V DC fan unit see FANWR-24R.
FANWR-24R (Preferred) 24Vdc fan unit with readback CC
51199947-275 FAN ASSEMBLY KIT 230VAC EC CC
51199947-175 Fan Assembly Kit, 115VAC, EC, CC
The Honeywell SMS fan units consist of a pair of fans. A read-back contact indicates the operational status of the fans.
Thermostat
The thermostat gives an alarm to alert you of temperature increasing inside the Safety Manager cabinet (e.g. when filters are blocked or fans fail). When a Honeywell SMS fan unit is installed, the thermostat is not required.
The Rittal SK 3110.000 thermostat is mounted on the top right-hand side of each Rittal cabinet and is suitable for temperatures ranging from +5°C-+55°C (+41°F-+131°F).
Fan unit 24 V DC with readback
The 24 V DC fan unit (FANWR-24R) consists of two fans and a printed circuit board (PCB) 07209 on a mounting plate.
The external 24 V DC power and readback contact wiring for the fan unit terminates on a 4 pole connector which slots into the fan unit.
Electronics in the fan unit generate the signals to indicate the fan status. If the speed of a fan is above minimum, a green LED next to that fan illuminates to indicate this. If both fans are above minimum speed the readback contact closes.
Finger guards are mounted on both sides of the fans.
The “Layout of the FANWR-24R fan unit and direction of air flow” below shows the direction of airflow and the bottom and side view of the fan unit.
Block diagram
The “Functional block diagram of the FANWR-24R fan unit” below shows a functional block diagram of the FANWR-24R fan unit.
Fan status indication
The fan unit is equipped with a potential free readback contact and green LEDs to indicate the fan status.
The readback contact is closed for about 15 seconds during powerup and when the rotation speed (RPM) of both fans is above the minimum speed.
A LED is on when the rotation speed (RPM) of the related fan is above the minimum speed.
Flow rate/Static pressure
The ” Flow rate against static pressure (per fan)” below shows the flow rate per fan against the static pressure. The grey area indicates the optimum operating range.
Electrical connections
The fan unit is equipped with a 4 pole screw connector to wire the readback contact and the 24Vdc power.
“Layout of the FANWR-24R fan unit and direction of air flow” on page 43 shows the location of the connector on the fan unit. The “The FANWR-24R fan unit connector details” on the facing page shows the connection details of this connector
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