System Manual ESM-F
4
Connecting expansion modules
All expansion modules are connected to the base unit’s power supply via the
expansion connectors supplied (see section
Mounting and replacing modules
).
The function of the additional inputs and safety contacts is the same as for the
base unit.
Important!
On the use of several expansion modules the total current consumption must
not be more than 3 A.
Connecting input modules
Important!
Input modules must always be connected to the left of the base unit. Jumpers
must be fitted to unused safety inputs.
The following input modules are available:
ESM-F-ISI-C
dual-channel inputs, with group output
ESM-F-I3I-3C
3 dual-channel inputs, without group output
ESM-F-ILI-3C
3 dual-channel inputs, without group output
without
short-circuit monitoring and earth fault monitoring
ESM-F-ISI-6C1
6 single-channel inputs, without group output
ESM-F-IMI-3C
3 dual-channel inputs for the connection of normally open
contact/normally closed contact combinations, without
group output
Safety components with normally closed contacts such as safety switches,
emergency stop buttons, etc. can be connected to the input modules
ESM-F-ISI…
and
ESM-F-I3I...
. The version
ESM-F-IMI…
is suitable for the connection of safety
switches with normally closed/normally open contacts, e.g.
CMS
safety switches
from EUCHNER. All safety inputs have short circuit and earth fault monitoring (not
ESM-F-ILI...). The input modules detect the switch state of each safety component
connected or a fault and signal this information to the base unit. If all safety circuits
are closed, the input module sends an enable signal to the base unit.
Figure 13: Input modules ESM-F-ISI..., ESM-F-ILI... and ESM-F-IMI...
S11
S13
(S21)
(S23)
S12 S14
(S22)(S24)
ESM-F-ISI-2C2
Safety
component
S11
(S13)
(S21)
(S23)
S31
(S33)
S12
(S14)
(S22)
(S24)
S32
(S34)
ESM-F-ISI-6C1
Safety
component
Safety
component
S11
S13
(S21)
(S23)
S12 S14
S31
S33
S32 S34
(S22)(S24)
ESM-F-I3I-3C2
ESM-F-ILI-3C2
Safety
component
Safety
component
S11
S13
(S21)
(S23)
S12 S14
S31
S33
S32 S34
(S22)(S24)
ESM-F-IMI-3C2
Safety
component
Safety
component