Connection Example; Figure 5-11 Alarm Contact Connection Example - Thermo Scientific Heratherm IMH 60 Operating Instructions Manual

Installation procedures
Wiring the Alarm Contact

Connection Example

The connector [5] for the interface cable is supplied with the incubator as a standard item.
Specifications for the operating voltage and the fusing of external alarm circuitry are given in
the table above.
1. Wire the individual conductors [1] through [4] of the interface cable as shown in the
wiring diagram.
2. Route the alarm cable along a path that does not cross hot exhaust air piping, tables, aisles
or passageways.
With stacked devices, keep the alarm cable away from hot spots on the other incubator in
the stack.
3. Plug the alarm system interface cable connector into the interface port [5] in the rear panel
of the incubator.

Figure 5-11 Alarm Contact Connection Example

The circuit diagram shown above represents the undisturbed condition of operation. In case of
an error condition - including a power outage - contact closure occurs on the path between
contacts 1-4.
5-12 Heratherm
To avoid overloading and damaging the alarm contact, check the
electrical interfacing parameters of the alarm-receiving system for
compatibility with the alarm relay specifications given above.
Alarm contact electrical compatibility
considerations
Thermo Scientific